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Journal articles on the topic 'And ytterbium'

Author: Grafiati

Published: 5 June 2025

Last updated: 25 June 2025

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1

Jalil, Muhammad Arif Bin. "A Review on the Ytterbium Doped Glass Laser." International Journal for Research in Applied Science and Engineering Technology 12, no. 12 (2024): 1965–70. https://doi.org/10.22214/ijraset.2024.66135.

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Abstract: A solid state laser doped with ytterbium is called a ytterbium doped glass laser. The active lasing media of solid state lasers are doped with ytterbium and other rare earth elements. Ytterbium doping produces brief pulses and increases laser efficiency. Glass lasers doped with ytterbium have an output wavelength of 1µm. The absorption capabilities and emission bandwidths are improved by ytterbium doping.[22]

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2

Mileiko, Sergei, Andrew Kolchin, Olga Shakhlevich, Sergei Galyshev, and Maxim Nikonovich. "Ytterbium Silicate Fibers: Fabrication, Microstructure and Strength." Fibers 7, no. 12 (2019): 104. http://dx.doi.org/10.3390/fib7120104.

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High temperature ceramic and metal matrix composites, which are to be used under complicated loading conditions in a severe atmosphere, have to satisfy a large number of the requirements. Hence, development of such composites calls for a large variety of fibers, matrices and interface materials to make an appropriate choice in designing a particular composite. The fiber is definitely the most important component of a composite. The family of oxide fibers is the most important among possible reinforcements for metal and oxide matrices. In this work, a family of potential oxide reinforcements containing ytterbium monosilicate Yb2SiO5 and disilicate Yb2Si2O7, and ytterbia-ytterbium monosilicate eutectic, was obtained and studied. The interest in those silicates was aroused because (i) they are highly resistant to hot corrosion in the presence of water vapor and (ii) their CTE varies from 8 × 10−6 K−1 for monosilicate to 4 × 10−6 K−1 for disilicate.

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3

Rüter, Christian E., Dominik Brüske, Sergiy Suntsov, and Detlef Kip. "Investigation of Ytterbium Incorporation in Lithium Niobate for Active Waveguide Devices." Applied Sciences 10, no. 6 (2020): 2189. http://dx.doi.org/10.3390/app10062189.

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In this work, we report on an investigation of the ytterbium diffusion characteristics in lithium niobate. Ytterbium-doped substrates were prepared by in-diffusion of thin metallic layers coated onto x- and z-cut congruent substrates at different temperatures. The ytterbium profiles were investigated in detail by means of secondary neutral mass spectroscopy, optical microscopy, and optical spectroscopy. Diffusion from an infinite source was used to determine the solubility limit of ytterbium in lithium niobate as a function of temperature. The derived diffusion parameters are of importance for the development of active waveguide devices in ytterbium-doped lithium niobate.

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4

Shi, Xianghui, Thayalan Rajeshkumar, Laurent Maron, and Jianhua Cheng. "CO, CO₂ and CS₂ activation by divalent ytterbium hydrido complexes." Chemical Communications 58, no. 9 (2022): 1362–65. http://dx.doi.org/10.1039/d1cc06449e.

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Treatment of a divalent ytterbium hydride complex 1 with CO, CO2 and CS2 resulted in the formation of a divalent ytterbium ethenediolate complex 2, a formate complex 3, and a trivalent ytterbium ethenetetrathiolate complex 4, respectively.

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5

Nicholson, John W. "Ytterbium (III) Fluoride in Dental Materials." Inorganics 11, no. 12 (2023): 449. http://dx.doi.org/10.3390/inorganics11120449.

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(1) Background: The compound ytterbium trifluoride is used as a component of several dental materials, and this is reviewed in the current article. (2) Methods: Published articles on this substance were identified initially from PubMed, and then from Science Direct and Google Scholar. The publications identified in this way showed that ytterbium trifluoride has been included in a variety of dental restorative materials, including composite resins, glass polyalkenoate cements, and calcium trisilicate cements. (3) Results: Ytterbium trifluoride is reported to be insoluble in water. Despite this, its presence is associated with fluoride release from dental materials. There is evidence that it reacts with the components of calcium trisilicate cements to form small amounts of a variety of compounds, including ytterbium oxide, Yb2O3, and calcium–ytterbium fluoride, CaYbF5. In nanoparticulate form, it has been shown to reinforce glass polyalkenoates and it also provides high contrast in X-ray images. (4) Conclusions: Ytterbium trifluoride is a useful component of dental materials, though some of the published findings suggest that there are aspects of its chemistry which are poorly understood.

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6

Zapata-Perez, Martha P., Javier Lara-Romero, Julian Lopez-Tinoco, Ricardo Rangel, Sergio Jiménez-Sandoval, and Dario Stacchiola. "Down/up conversion luminescence of erbium-ytterbium co-deposited nanoparticles on carbon nanotubes via a microwave-assisted method." PeerJ Materials Science 7 (March 7, 2025): e33. https://doi.org/10.7717/peerj-matsci.33.

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In this study we present the synthesis of erbium, ytterbium and erbium-ytterbium nanoparticles supported on multiwalled carbon nanotubes by a microwave-assisted method as well as the evaluation of their luminescent properties. In the case of erbium, nanoparticles of ~1 nm homogeneously dispersed on the carbon nanotubes were obtained. In the case of ytterbium, the carbon nanotubes were partially coated with this metal. Clusters of erbium-ytterbium nanoparticles were obtained in the co-deposition of both metals. The erbium-ytterbium/carbon nanotube composite showed both down- and up-conversion luminescence. For the down-conversion process, strong emission signals at 523, 530 and 563 nm as well as a weak signal at 612 nm under 488 nm excitation are observed. For the up-conversion process, the composite showed emission signals centered at 528 and 660 nm under 980 nm excitation.

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7

Makhmudov, Sh, F. Mamedova, and I. Mehdiyev. "Synthesis of Grignard-like Cymantrenyl Derivatives of Divalent Samarium and Ytterbium and their Reactions with Aldehyde and Ketones." Bulletin of Science and Practice 10, no. 12 (2024): 38–42. https://doi.org/10.33619/2414-2948/109/04.

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The article presents data on the synthesis and study of the reactivity of divalent samarium and ytterbium derivatives of cymantrene. It is shown that regardless of the structure and nature of the organic radical, the products of the interaction of aldehydes (ketones) with cymantrene, samarium, and ytterbium derivatives are not carbinol derivatives of cymantrene, but due to the redox process, the corresponding alkenyl derivative. Thus, the synthesis of Grignard-like derivatives of ytterbium and samarium in a THF solution was carried out. Their reactivity with ketones and various aldehydes was also studied. It was established that the samarium and ytterbium compounds decompose above 110°C and 120°C, respectively.

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8

Tuan, Tran. "Ytterbium Trifluoromethansulfonate." Synlett 2010, no. 12 (2010): 1880–81. http://dx.doi.org/10.1055/s-0030-1258101.

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9

Дудникова, В. Б., Е. В. Жариков, Д. А. Лис та Н. Н. Еремин. "Энергетическое обоснование образования димеров иттербия в монокристаллах форстерита". Физика твердого тела 61, № 4 (2019): 737. http://dx.doi.org/10.21883/ftt.2019.04.47422.339.

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AbstractA structural computer simulation of ytterbium-containing forsterite crystals has been carried out. Atomistic simulation is performed using the GULP 4.1 software package (General Utility Lattice Program). Different mechanisms of ytterbium dissolution in forsterite crystals are considered, and the dissolution energies of isolated defects, as well as charged and neutral clusters of various configurations, are calculated. The results of the calculation manifest that the formation of ytterbium clusters with a magnesium vacancy gives a significant gain in the dissolution energy. The formation of neutral clusters (dimers) in the M1 site (Yb_Mg1ν_Mg1Yb_Mg1) leads to an energy reduction by 1.7 eV compared with the statistical distribution of defects. As a result of simulation, it is shown the energetic substantiation of the formation of ytterbium dimers in forsterite crystals. A model of the most energetically favorable center in the M1 site is proposed—a dimer, consisting of a pair of trivalent ytterbium ions with a magnesium vacancy between them, forming a chain parallel to the crystallographic axis c .

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10

Zar, Zar Myint Aung. "Effect of Ytterbium Substitution on the Structural and Magnetic Properties of Nanocrystalline Zinc Ferrite." International Journal of Trend in Scientific Research and Development 3, no. 5 (2019): 1780–84. https://doi.org/10.5281/zenodo.3591475.

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A series of ytterbium substituted Zinc ferrites Zn YbxFe1 x 2O4 with x=0.0000, 0.0125, 0.0250, 0.0375, 0.0500 was synthesized by the solid state method. The structural characterizations of all the prepared samples were done by using X ray diffraction XRD . These studies confirmed the formation of single phase structure in all compositions. The increase in the value of lattice parameter with increase in ytterbium concentration suggests the expansion of unit cell. Crystallinity and the crystallite size are observed to increase with the concentration of Ytterbium. The substitution of ytterbium strongly influences the magnetic characteristics and this is confirmed from the magnetization measurements at room temperature. Zar Zar Myint Aung "Effect of Ytterbium Substitution on the Structural and Magnetic Properties of Nanocrystalline Zinc Ferrite" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-5 , August 2019, URL: https://www.ijtsrd.com/papers/ijtsrd27826.pdf

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11

Shibakov, I. A., V. V. Zakorzhevsky, and I. D. Kovalev. "INVESTIGATION OF THE INFLUENCE OF YTTERBIUM OXIDE ON PHASE COMPOSITION AND SHS PARAMETERS OF COMPOSITIONS BASED ON SILICON NITRIDE." Steklo i Keramika, no. 22 (October 2023): 21–25. http://dx.doi.org/10.14489/glc.2023.10.pp.021-025.

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Using the method of self-propagating high-temperature synthesis (SHS) SHS compositions based on the Si3N4–Yb2O3 system were obtained. Synthesis by combustion was carried out in a nitrogen atmosphere at a pressure of 4 MPa in a reactor with a volume of 30 liters. The mass of the loaded mixture was 3 kg. It has been established that the amount of ytterbium oxide in the charge affects the combustion temperature and the phase composition of the synthesis products. With an increase in the proportion of ytterbium oxide in the mixture, the content of the alpha phase decreases, and the secondary phases are represented by quaternary ytterbium-silicon oxynitride and ytterbium disilicate.

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12

Kuzmin M.V. and Mittsev M.A. "X-ray photoelectron spectroscopy of ytterbium nanofilms with oxygen adsorbed on their surface." Physics of the Solid State 64, no. 7 (2022): 866. http://dx.doi.org/10.21883/pss.2022.07.54596.309.

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X-ray photoelectron spectra of nanoscale-thickness ytterbium films along with adsorbed oxygen layers have been studied for the first time. It is found that the spectra include features from both divalent and trivalent ytterbium. The intensity ratio of these features raises upon increasing the film thickness (the size effect). It is shown that the above behavior is due to the formation of two final states related to divalent and trivalent ytterbium at the photoionization of 4f-level by photons with the energy of 1253.6 eV, while only the trivalent state is realized by using the photons with the energy of 142 eV. Keywords: Ytterbium, nanofilms, adsorbed molecules, electronic state, X-ray photoelectron spectroscopy.

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13

LAPKINA, LUDMILA A., ELINA NISKANEN, HANNU RÖNKKÖMÄKI, VLADIMIR E. LARCHENKO, KONSTANTIN I. POPOV, and ASLAN YU TSIVADZE. "Synthesis and characterization of sandwich-type gadolinium and ytterbium crown ether-substituted phthalocyanines." Journal of Porphyrins and Phthalocyanines 04, no. 06 (2000): 588–90. http://dx.doi.org/10.1002/1099-1409(200009/10)4:6<588::aid-jpp220>3.0.co;2-n.

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An original method based on metal-free ligand and lanthanide acetate direct interaction in the presence of a strong organic base (DBU) is used to prepare sandwich-type gadolinium and ytterbium crown-ether substituted phthalocyanines bis[4,5,4′,5′,4″,5″,4‴,5‴-tetrakis(1,4,7,10,13-pentaoxatridecamethylene)phthalocyaninato]gadolinium (ytterbium) and tris[4,5,4′,5′,4″,5″,4‴-,5‴-tetrakis(1,4,7,10,13-pentaoxatridecamethylene)phthalocyaninato]digadolinium (ytterbium) which are characterized by MALDI-TOF mass spectrometry and UV-vis spectroscopy.

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14

Alekseev, I. E., and S. A. Krotov. "Preparation of 177Lu Using Vacuum Sublimation Technology." Radiochemistry 65, no. 2 (2023): 198–204. http://dx.doi.org/10.1134/s1066362223020066.

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Abstract A simple sublimation technology for the lutetium and ytterbium separation was proposed, which already at the stage of preliminary experiments showed effectiveness: (a) the completeness of Yb separation resulted in short-term thermal annealing is at least 98%, the distilled product is completely free from 177Lu, no additional preparation of ytterbium for repeated irradiation is required ; (b) traditional ion-exchange chromatography can be used for the final purification of 177Lu from ytterbium.

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15

Zhang, Quanquan, Guoe Cheng, Hanzhong Ke, et al. "Effects of peripheral substitutions on the singlet oxygen quantum yields of monophthalocyaninato ytterbium(iii) complexes." RSC Advances 5, no. 28 (2015): 22294–99. http://dx.doi.org/10.1039/c5ra02569a.

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A new monophthalocyaninato ytterbium(iii) complex5has been prepared and characterized. The effects of substituents on the relative singlet oxygen quantum yields of monophthalocyaninato ytterbium(iii) complexes have been investigated.

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16

Tcelykh, Liubov O., Andrey A. Vashchenko, Aleksei V. Medved'ko, et al. "Ytterbium complexes with 2-(tosylamino)-benzylidene-N-(2-halobenzoyl)-hydrazones for solution-processable NIR OLEDs." Journal of Materials Chemistry C 10, no. 4 (2022): 1371–80. http://dx.doi.org/10.1039/d1tc04600d.

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17

Aerts, Robin, Bart Geboes, Karen Van Hecke, Koen Binnemans, and Thomas Cardinaels. "Electrochemical Reduction of Ytterbium in Non-Aqueous Solvents - Towards Production of Pure Medical Lutetium-177." ECS Meeting Abstracts MA2023-02, no. 25 (2023): 1384. http://dx.doi.org/10.1149/ma2023-02251384mtgabs.

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In recent years targeted radionuclide therapy has become a topic of great interest as a growing number of cancers can potentially be treated with radionuclides like lutetium-177 and samarium-153. To facilitate this growth and meet the demand, preparation and purification of lutetium-177 is increasing in importance. In the most common production route, enriched ytterbium-176 targets are irradiated and the produced lutetium-177 is separated from the ytterbium target material. This challenging separation is commonly performed using ion exchange resins, a method limited in scalability as the chemical similarity between ytterbium and lutetium results in poor separation at higher concentrations. An alternative method to aid the separation of lutetium from ytterbium is the electrochemical reduction of ytterbium as a change in oxidation states changes chemical properties significantly. Ytterbium has an accessible divalent state, whereas lutetium has not. However, the very negative value of the Yb(III)/Yb(II) standard reduction potential (E0= -1.04 V vs. SHE) does pose some challenges as it becomes a necessity to work in non-aqueous solvents with a very low water content. Similar research has already been performed in our group, looking into the separation of samarium-153 from europium-154, reducing europium in nitrate media, followed by a separation over TEVA resin. In this study, we investigated the reduction of ytterbium in ethylene glycol, dimethyl sulfoxide, tetrahydrofuran and N,N-dimethyl formamide by cyclic voltammetry, linear sweep voltammetry and electronic impedance spectroscopy. The influence of multiple variables such as moisture content on the reduction kinetics and stability of Yb(II) was determined and a Koutecky-Levich analysis was performed. Our results demonstrate that the reduction of ytterbium in non-aqueous solvents is feasible but attempts to perform bulk electrolysis were not successful yet. Ethylene glycol, dimethyl sulfoxide and N,N-dimethyl formamide demonstrate favorable conditions and in each solvents clear reduction and oxidation peaks were observed. It was found that the solvents do affect the peak separation, reduction potential and sensitivity to passivation. Figure 1

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18

Kuzmenkov, O. A., and A. M. Kalinkin. "Solid-phase synthesis of ytterbium zirconate using mechanical activation." Transaction Kola Science Centre 12, no. 2-2021 (2021): 154–58. http://dx.doi.org/10.37614/2307-5252.2021.2.5.031.

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Nanocrystalline ytterbium zirconate Yb4Zr3O12 was prepared by the solid-phase method using mechanical activation of stoichiometric mixture of zirconium and ytterbium oxides. Mechanical activation was carried out in an AGO-2 centrifugal-planetary mill at a centrifugal factor of 40 g for 10 min. The processes occurring during the calcination of the mechanically activated mixture of ytterbium and zirconium oxides in the range from 600 to 1300 °C were investigated using X-ray phase analysis, IR spectroscopy, and complex thermal analysis.

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19

Bakan, Emine, Dapeng Zhou, Daniel E. Mack, Dietmar Koch, and Robert Vaßen. "Plasma sprayed duplex ytterbium disilicate/monosilicate EBCs and the transformation from ytterbia to ytterbium monosilicate during burner rig testing." Corrosion Science 235 (July 2024): 112174. http://dx.doi.org/10.1016/j.corsci.2024.112174.

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20

Shurukhina, Anna V., Dmitriy S. Barinov, Dmitriy A. Zharovov, et al. "Dependence of the quantum yield of upconversion luminescence emitted by powdered NaYF₄:Yb,Er samples on ytterbium-ion content and excitation intensity." Journal of Optical Technology 91, no. 5 (2024): 342. http://dx.doi.org/10.1364/jot.91.000342.

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Subject of study. This study investigated a series of powdered NaYF4:Yb,Er samples with varying ytterbium-ion contents. Aim of study. This study aimed to determine the change in the quantum yield of upconversion luminescence exhibited by NaYF4:Yb,Er as a function of the ytterbium-ion content and intensity of excitation by laser irradiation at a wavelength of 975 nm. Method. The quantum yield of upconversion luminescence was determined using a spectrometer and an integrating sphere. Main results. The quantum yield of upconversion luminescence was measured for a series of powdered NaYF4:Yb,Er samples with different ytterbium-ion contents. The optimal ytterbium-ion content, corresponding to the maximum efficiency of upconversion, was found to be 0.4 at%. Practical significance. The results obtained can be applied in optoelectronics, medicine, and the development of laser facilities.

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21

Yi, Yongqing, Yize Shen, Pengcheng Geng, Rong Pan, Shijie Xu, and Ruifang Luo. "Ytterbium-Doped Double-Clad Fiber with High Uniformity of Concentration Distribution and Suppressed Photodarkening." Photonics 11, no. 6 (2024): 565. http://dx.doi.org/10.3390/photonics11060565.

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Photodarkening (PD) effect in ytterbium-doped fiber (YDF) has a significant impact on the high-power operational stability of fiber lasers, which seriously hinders the power scaling. In this paper, the relationship between ytterbium ions uniformity and the photodarkening effect in the YDF was investigated, and the fabrication process allowing improving the ytterbium ions uniformity in the core of preforms for suppressing the photodarkening effect was developed. The Modified Chemical Vapor Deposition (MCVD) method combined with Chelate Vapor Deposition (CVD) technology was adopted for multi-layer fiber core deposition, and an all-gas-phase technical process was proposed to improve the ytterbium ions uniformity in the Al/P co-doped glass matrix. The 25/400 μm YDFs obtained by this technology achieved stable 3.5 kW laser output power for 8 h with suppressed PD and nonlinear effects.

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22

Кузьмин, М. В., та М. А. Митцев. "Переход металл-полупроводник в нанопленках иттербия, индуцированный адсорбированными молекулами кислорода". Журнал технической физики 91, № 7 (2021): 1189. http://dx.doi.org/10.21883/jtf.2021.07.50961.18-21.

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The influence of nondissociative adsorption of oxygen molecules on the electronic structure of ytterbium films with the thickness of 16 monolayers (6.08 nm) has been studied for the first time by using scanning tunneling spectroscopy. It is established that the adsorption of O2 molecules induces the metal-semiconductor transition in ytterbium. As a result of this transition, the quantum states have disappeared in the films, which evidences for a change of bonding type in the ytterbium crystal lattice, as well as the band gap of ~0.72 eV has opened.

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23

Ryabochkina, P. A., S. A. Khrushchalina, A. N. Belyaev, O. S. Bushukina, I. A. Yurlov, and S. V. Kostin. "Use of dielectric nanoparticles doped with Yb³⁺ ions to enhance the thermal effect in a biological tissue exposed to near-IR laser radiation (in vivo experiments)." Quantum Electronics 51, no. 11 (2021): 1038–43. http://dx.doi.org/10.1070/qel17646.

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Abstract The conditions for the appearance of broadband radiation from particles of zirconium dioxide stabilised by ytterbium oxide upon excitation by intense laser radiation with a wavelength of 980 nm are investigated. It is shown that this radiation is observed at a lower excitation power density and lower ytterbium content than in particles of orthophosphates and their hydrates. As a result of in vivo experiments, the possibility of using ytterbium-containing particles to enhance the thermal effect from exposure to laser radiation with a wavelength of 980 nm on the skin of a rat is demonstrated.

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24

Farooq, Nosheen, Rafael Luque, Mahmoud M. Hessien, et al. "A Comparative Study of Cerium- and Ytterbium-Based GO/g-C3N4/Fe2O3 Composites for Electrochemical and Photocatalytic Applications." Applied Sciences 11, no. 19 (2021): 9000. http://dx.doi.org/10.3390/app11199000.

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The design of sustainable and efficient materials for efficient energy storage and degradation of environmental pollutants (specifically organic dyes) is a matter of major interest these days. For this purpose, cerium- and ytterbium-based GO/g-C3N4/Fe2O3 composites have been synthesized to explore their properties, especially in charge storage devices such as supercapacitors, and also as photocatalysts for the degradation of carcinogenic dyes from the environment. Physicochemical studies have been carried out using XRD, FTIR, SEM, and BET techniques. Electrochemical techniques (cyclic voltammetry, galvanic charge discharge, and electrochemical impedance spectroscopy) have been employed to measure super-capacitance and EDLC properties. Results show that the gravimetric capacitance calculated from GCD results is 219 Fg−1 for ytterbium- and 169 Fg−1 for cerium-based nanocomposites at the current density of 1 A/g and scan rate of 2 mV/sec. The specific capacitance calculated for the ytterbium-based nanocomposite is 189 Fg−1 as compared to 125 Fg−1 for the cerium-based material. EIS results pointed to an enhanced resistance offered by cerium-based nanocomposites as compared to that of ytterbium, which can be assumed with the difference in particle size, as confirmed from structural studies including XRD. From obtained results, ytterbium oxide-based GO/g-C3N4/Fe2O3 is proven to be a better electro-catalyst as compared to cerium-based nanocomposites. Photocatalytic results are also in agreement with electrochemical results, as the degradation efficiency of ytterbium oxide-based GO/g-C3N4/Fe2O3 (67.11 and 83.50% for rhodamine B and methylene blue dyes) surpasses values observed for cerium-based GO/g-C3N4/Fe2O3 (63.08 and 70.61%).

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25

OGINO, Tadayoshi, and Takashi ONOZAWA. "Ytterbium (III) Trifluoromethanesulfonate." Journal of Synthetic Organic Chemistry, Japan 56, no. 1 (1998): 71–73. http://dx.doi.org/10.5059/yukigoseikyokaishi.56.71.

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26

Assoud, Abdeljalil, and Holger Kleinke. "Ytterbium sesquiselenide Yb2Se3." Acta Crystallographica Section E Structure Reports Online 59, no. 7 (2003): i103—i104. http://dx.doi.org/10.1107/s1600536803013242.

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27

Skelton, Alasdair, and Brett F. Thornton. "Iterations of ytterbium." Nature Chemistry 9, no. 4 (2017): 402. http://dx.doi.org/10.1038/nchem.2755.

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28

Horchani-Naifer, Karima, and Mokhtar Férid. "Potassium ytterbium diphosphate." Acta Crystallographica Section E Structure Reports Online 63, no. 2 (2007): i33—i34. http://dx.doi.org/10.1107/s1600536806054845.

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29

Behrsing, Thomas, Glen B. Deacon, and Peter C. Junk. "Element 70 – Ytterbium." Australian Journal of Chemistry 72, no. 12 (2019): 927. http://dx.doi.org/10.1071/ch19527.

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30

Кузьмин, М. В., та М. А. Митцев. "Влияние адсорбированных молекул СО на электронное состояние нанопленок иттербия, выращиваемых на кремниевых подложках". Журнал технической физики 89, № 7 (2019): 1086. http://dx.doi.org/10.21883/jtf.2019.07.47804.47-19.

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Adsorption of carbon monoxide (CO) molecules on ytterbium nanofilms with the thickness of 16 – 200 monolayers (6.1 – 76 nm) has been studied. The films are grown on single-crystal silicon substrates with the (111) surface orientation. It is shown that before the adsorption of CO molecules, ytterbium is divalent with the electronic configuration of [Xe]4f146s2. Upon the adsorption of gas molecules, a layer of trivalent ytterbium (the electronic configuration is [Xe]4f135d16s2), which is adjacent to the film surface, is formed. Evaluations of the thickness of the layer modified by adsorbed CO molecules are performed. Such evaluations have given rise to the values within 9 – 22 monolayers (3.4 – 8.4 nm).

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31

Daliev, Khodjakbar S., Sharifa B. Utamuradova, Jonibek J. Khamdamov, et al. "Defect Formation in MIS Structures Based on Silicon with an Impurity of Ytterbium." East European Journal of Physics, no. 4 (December 8, 2024): 301–4. https://doi.org/10.26565/2312-4334-2024-4-33.

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The characteristics of silicon MIS structures with ytterbium impurity are studied using non-stationary capacitance spectroscopy of deep levels. It is established that the presence of ytterbium atoms in the bulk of the silicon substrate leads to a shift in the capacitance-voltage characteristics towards positive bias voltages and a decrease in the density Nss of the surface states of the MIS structures. It is shown that this effect depends on the concentration of ytterbium atoms in the silicon substrate of the studied structures. In MIS structures based on Si<Yb>, one deep level with an ionization energy Ec-0.32 eV is detected.

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32

Spino, Claude, Laurel Clouston, and David Berg. "Novel, air-stable, lanthanide catalysts for the hetero Diels–Alder reaction." Canadian Journal of Chemistry 74, no. 9 (1996): 1762–64. http://dx.doi.org/10.1139/v96-195.

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Novel, air-stable, yttrium and ytterbium complexes were found effective in the catalysis of the typical hetero Diels–Alder reaction of crotonaldehyde and ethylvinyl ether. They represent an attractive solution to the problem of ligand lability in the realm of lanthanide catalysts. Key words: lanthanide, catalyst, hetero Diels–Alder, yttrium, ytterbium.

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33

Skucha-Nowak, Małgorzata, Anna Nowak-Wachol, Dariusz Skaba, Kacper Wachol, and Anna Korytkowska-Wałach. "Use of Ytterbium Trifluoride in the Field of Microinvasive Dentistry—An In Vitro Preliminary Study." Coatings 10, no. 10 (2020): 915. http://dx.doi.org/10.3390/coatings10100915.

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Background: The aim of this study was an attempt at determining the quantity of the degree of the addition of ytterbium trifluoride as a marker, aimed at facilitating the observation and assessment of the effectiveness of penetration into the decalcified enamel of human teeth of an experimental preparation with the characteristics of a dental infiltrant and a commercially available commercial preparation called Icon. Methods: The test material was 20 decalcified human teeth. The first half of the batch was soaked in Icon, the second half in an experimental preparation with the characteristics of a dental infiltrant and with a component responsible for bacteriostaticity. Ytterbium trifluoride was added to both preparations to facilitate the microscopic observations: 20 mg/1 g in the first phase of the experiment, 60 mg/1 g in the second phase. Results: YbF3 particles could not be found in the teeth from the first phase of the experiment. Particles rich in ytterbium could be found only in the teeth from the second phase of the experiment, with three times the content of ytterbium. Conclusion: The addition of 6% ytterbium trifluoride (both commercial and laboratory synthesized) facilitates microscopic observation, allowing the conclusion that both Icon and the experimental preparation with the characteristics of a dental infiltrant penetrate the decalcified enamel of a human tooth. The SEM analysis of the preparations in terms of content and particle size of ytterbium trifluoride shows that the distribution is heterogeneous. Large size particles predominate, yet particles with a diameter of less than 1 µm were also found. This may confirm the fact that most of them have probably agglomerated. The method of scattering YbF3 nanoparticles in the infiltrant resin requires further work so that they do not appear as agglomerates.

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34

Wang, Sida, Farid M. Sroor, Phil Liebing, Volker Lorenz, Liane Hilfert, and Frank T. Edelmann. "Crystal structures of two ytterbium(III) complexes comprising alkynylamidinate ligands." Acta Crystallographica Section E Crystallographic Communications 72, no. 9 (2016): 1229–33. http://dx.doi.org/10.1107/s2056989016012135.

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Two ytterbium(III) complexes comprising alkynylamidinate ligands, namely bis(η5-cyclopentadienyl)(3-cyclopropyl-N,N′-diisopropylpropynamidinato-κ2N,N′)ytterbium(III), [Yb(C5H5)2(C12H19N2)] or Cp2Yb[(iPr2N)2C—C[triple-bond]C—c-C3H5] (1) and tris(3-phenyl-N,N′-dicyclohexylpropynamidinato-κ2N,N′)ytterbium(III), [Yb(C21H27N2)3] or Yb[(CyN)2C—C[triple-bond]C—Ph]3(Cy = cyclohexyl) (2) have been synthesized and structurally characterized. Both complexes are monomers; for complex2, the contribution to the scattering from highly disordered toluene solvent molecules in these voids was removed with the SQUEEZE routine [Spek (2015).Acta Cryst.C71, 9–18] inPLATON. The stated crystal data forMr, μetc. do not take these into account.

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35

KOROVIN, YU, Z. ZHILINA, N. RUSAKOVA, V. KUZ'MIN, S. VODZINSKY, and YU ISHKOV. "Spectral-luminescent effects in heterometallic complexes of crown-porphyrins." Journal of Porphyrins and Phthalocyanines 05, no. 05 (2001): 481–85. http://dx.doi.org/10.1002/jpp.350.

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New complexes of ytterbium with porphyrins containing crown- and other oxygen-containing cyclic substituents were obtained. The absorption, excitation, ligand luminescence and 4f-luminescence spectra have been investigated. It has been shown that 4f-luminescence of ytterbium Yb ( III ) ions was a result of the intramolecular energy transfer from the triplet level of the ligands to the resonance 2F5/2 level of Yb ( III ). It has been also established that in presence of alkali metal Na , K and Cs the dimer complexes (sandwich-type) of ytterbium-crown-porphyrin were formed. Molecular luminescence of the porphyrin matrix was quenched completely in these dimers, but at the same time the quantum yield and lifetime of 4f-luminescence increase in the complexes.

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36

Zhang, Zhiyi, Donglin Guo, Xiaojiong Yang, and Jiazheng Zhang. "Calcination of ytterbia aerogels leads to ferromagnetic nanoporous ytterbium oxide networks." Materials Letters 261 (February 2020): 126866. http://dx.doi.org/10.1016/j.matlet.2019.126866.

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37

Yi, Wen-Bin, Ya-Qing Yin, and Chun Cai. "Ytterbium perfluorooctanesulfonate catalyzed synthesis of acylals from aldehydes and acetic anhydride in a fluorous biphasic system." Canadian Journal of Chemistry 84, no. 11 (2006): 1563–66. http://dx.doi.org/10.1139/v06-162.

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Ytterbium perfluorooctanesulfonate [Yb(OPf)3] catalyses the highly efficient synthesis of acylals from aldehydes and acetic anhydride in a fluorous biphase system (FBS) composed of toluene and perfluorodecalin. The fluorous phase containing the fluorous catalyst is easily separated and can be reused several times without significant loss of catalytic activity.Key words: acylals, ytterbium perfluorooctanesulfonate, fluorous biphasic catalysis.

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38

Rokicki, P., M. Góral, T. Kubaszek, et al. "The microstructure and thermal properties of Yb2SiO5 coating deposited using APS and PS-PVD methods." Archives of Materials Science and Engineering 114, no. 2 (2022): 49–57. http://dx.doi.org/10.5604/01.3001.0016.0025.

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The new ceramic material for Enviromental Barrier Coatings (EBC) on ceramic material was developed. The ytterbium monosilicate was deposited using two methods: atmospheric plasma spray (APS) and plasma spray physical vapour deposition (PS-PVD). Obtained coating was characterized by dense structure and columns typically formed in PS-PVD process were not observed. In comparison with APS-deposited coating, in this method, both elements segregation and formation of ytterbium oxide occurred. The further research for production of columnar coatings will be necessary. Developed coatings migh be used for next generations of ceramic materials used for gas turbine and jet engine blades and vanes as a high temperature and corrosion protection. The first time the ytterbium monosilicate was produced bot by APS and LPPS methods.

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39

Miaokang, Shen, and Shi Yinyu. "Determination of Lanthanum, Europium, and Ytterbium in Food Samples by Electrothermal Atomic Absorption Spectrometry." Journal of AOAC INTERNATIONAL 75, no. 4 (1992): 667–71. http://dx.doi.org/10.1093/jaoac/75.4.667.

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Abstract A method had been developed for the determination of lanthanum, europium, and ytterbium in food samples by using electrothermal atomic absorption spectrometry with a graphite furnace lined with tungsten foil. The proposed method provides higher sensitivity than inductively coupled plasma/atomic emission spectrometry (ICP/AES); the characteristic masses are 8.1 x 10-9 g for lanthanum, 3.9 x 10-11 g for europium, and 4.27 x 10,-12 g for ytterbium. The precision, accuracy, and interferences of the method were also investigated. The method can be used for the analysis of trace amounts of lanthanum, europium, and ytterbium in various foods without predissociation of the matrixes of the digested solutions. The results obtained by the method are in good agreement with those from ICP/AES.

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40

Kuzmin М.V. and Mittsev М.А. "Thermal properties of CO-Yb-substrate nanostructures." Technical Physics 92, no. 5 (2022): 629. http://dx.doi.org/10.21883/tp.2022.05.53681.312-21.

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Influence of adsorbed carbon monoxide molecules on the thermal properties of rare-earth metal ytterbium films of nanoscale thickness has been studied. The films are produced at room temperature by metal deposition on single-crystal silicon substrates with the Si(111) surface orientation or textured tungsten ribbons with the predominant (100) face. It is shown that the adsorbed molecules hinder evaporation of ytterbium. The strength of such hindering is dependent on the chemical nature of substrate material. It is established that the substrates affect the state of adsorbed molecules through the nanofilms. This in turn influences on the evaporation rate of nanolayer material. Keywords: thermal stability of nanofilms, surface, adsorbed molecules, carbon monoxide, ytterbium, silicon, tungsten, Auger electron spectroscopy, mass spectrometry.

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41

Шкерин, С. Н., Е. С. Ульянова та Э. Г. Вовкотруб. "Фотолюминесценция диоксида циркония, допированного иттербием". Физика твердого тела 64, № 4 (2022): 467. http://dx.doi.org/10.21883/ftt.2022.04.52187.252.

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Raman spectra were studied for the cubic ytterbium doped zirconia with 10, 20 and 25% of dopant. This part of investigation deals with region of large wave numbers. Two different excitation sources with wavelength 785 and 532 nm are used. For first time Stokes lines that are independent of the excitation wavelength were observed together with conventional luminescence of ytterbium cation.

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42

Rauf, M. A., S. M. Hasany, and I. Ellahi. "Selective Adsorption Studies of Ytterbium on Sand from Aqueous Solution." Adsorption Science & Technology 12, no. 4 (1995): 317–21. http://dx.doi.org/10.1177/026361749501200406.

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Adsorption studies of ytterbium on sand from dilute nitric acid solutions have been studied in relation to the properties of both adsorbate and adsorbent. The conditions for maximum adsorption were optimized. The effect of added cations, anions and other metal ions were also investigated. Ytterbium was found to separate well from solutions containing CoII, EuIII and ZnII in appreciable amounts under given conditions.

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43

Rauf, M. A., M. J. Iqbal, I. Ellahi, and S. M. Hasany. "Kinetic and Thermodynamic Aspects of Ytterbium Adsorption on Sand." Adsorption Science & Technology 13, no. 2 (1996): 97–104. http://dx.doi.org/10.1177/026361749601300203.

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The kinetic and thermodynamic parameters for the adsorption of ytterbium on sand samples from dilute acidic solution are presented. The sorption equilibrium constant, Kc, has been calculated at different temperatures between 18 and 37°C. The sorption data fitted the Freundlich and Dubinin–Radushkevich (D–R) models well. Thermodynamic calculations showed that the sorption of ytterbium on sand was endothermic in nature

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44

Kumar, Anil, Israr Ahmad, and M. Sudershan Rao. "Ytterbium(III) triflate catalyzed synthesis of calix[4]pyrroles in ionic liquids." Canadian Journal of Chemistry 86, no. 9 (2008): 899–902. http://dx.doi.org/10.1139/v08-121.

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Ytterbium(III) triflate has been utilized as a mild Lewis-acid catalyst for the synthesis of various calix[4]pyrroles by the condensation of pyrrole with different ketones in ionic liquids. The calix[4]pyrroles were obtained in high yield under ecofriendly, economical, and noncorrosive conditions, and the catalyst was recovered and recycled.Key words: calix[4]pyrrole, ionic liquid, ytterbium triflate.

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45

Shkerin S. N., Ulyanova E. S., and Vovkotrub E. G. "Photoluminescence of ytterbium doped zirconia." Physics of the Solid State 64, no. 4 (2022): 451. http://dx.doi.org/10.21883/pss.2022.04.53502.252.

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Raman spectra were studied for the cubic ytterbium doped zirconia with 10, 20 and 25% of dopant. This part of investigation deals with region of large wave numbers. Two different excitation sources with wavelength 785 and 532 nm are used. For first time Stokes lines that are independent of the excitation wavelength were observed together with conventional luminescence of ytterbium cation. Keywords: Zr(Yb)O2, Raman spectroscopy, photoluminescence, the crystal defects association.

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46

Xiao, Jie, Qian Guo, Liangliang Wei, Wenting He, and Hongbo Guo. "Microstructures and Phases of Ytterbium Silicate Coatings Prepared by Plasma Spray-Physical Vapor Deposition." Materials 13, no. 7 (2020): 1721. http://dx.doi.org/10.3390/ma13071721.

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Ytterbium silicate coatings were deposited on SiCf/SiC ceramics matrix composite (CMC) substrates by plasma spray-physical vapor deposition (PS-PVD), and the microstructures and phase constituents of the coatings were studied. The results show that the Yb2SiO5 coating prepared with high power and low pressure (65 kW/2 mbar) had quasi-columnar structure, mainly deposited from the vapor phase, whereas the coating prepared with low power and high pressure (40 kW/10 mbar) had a typical layered structure, mainly deposited from the liquid phase. The deposition efficiency of parameter A (~2 μm/min) was also significantly lower than that of parameter B (~20 μm/min). After annealing at 1300 °C for 20 h, the coating prepared by 65 kW/2 mbar was mainly composed of ytterbium disilicate phase (77.2 wt %). The coating also contained some silicon-rich phase. The coating prepared by 40 kW/10 mbar basically consisted of ytterbium monosilicate (63.6 wt %). In addition, a small amount of silicon-rich phase and ytterbium-rich phase were also present in the coating. Accompanied with calculation results by the FactSage software, the cause of deviations in phase compositions was analyzed.

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47

Niemeyer, Mark. "trans-Diiodopentakis(tetrahydrofuran)ytterbium(III) tetraiodo-trans-bis(tetrahydrofuran)ytterbium(III)." Acta Crystallographica Section E Structure Reports Online 57, no. 8 (2001): m363—m364. http://dx.doi.org/10.1107/s1600536801011254.

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48

Guillot, M., H. Le Gall, A. Marchand, A. Barlet, M. Artinian, and J. Ostoréro. "YTTERBIUM SUBLATTICE CONTRIBUTION TO THE FARADAY ROTATION OF YTTERBIUM IRON GARNET." Le Journal de Physique Colloques 49, no. C8 (1988): C8–961—C8–962. http://dx.doi.org/10.1051/jphyscol:19888439.

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49

Kuzmin M.V. and Mittsev M.A. "Effect of Friedel Oscillations on the Work Function of Ytterbium Nanofilms." Physics of the Solid State 65, no. 6 (2023): 1036. http://dx.doi.org/10.21883/pss.2023.06.56121.48.

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The effect of standing waves of charge density (Friedel oscillations) generated by an interface of the metallic ytterbium nanofilm single-crystal silicon substrate type on the work function of ytterbium nanolayers has been studied. It is shown that in the range of nanofilm thicknesses from 0 to 8 monatomic layers, the work function has an oscillating character. This feature of the dependence of the work function on the nanofilm thickness is a consequence of the fact that the standing waves change nonmonotonically the power (momentum) of the electric double layer, which exists on the metal surface and affects the work function of the metal. This ultimately determines the oscillating nature of the dependence of the work function on the thickness of the nanofilms. Keywords: surface, nanofilm, work function, Friedel oscillations, electric double layer, ytterbium.

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50

Pędrak, Paweł, Marek Góral, Kamil Dychton, Marcin Drajewicz, Malgorzata Wierzbinska, and Tadeusz Kubaszek. "The Influence of Reactive PS-PVD Process Parameters on the Microstructure and Thermal Properties of Yb2Zr2O7 Thermal Barrier Coating." Materials 15, no. 4 (2022): 1594. http://dx.doi.org/10.3390/ma15041594.

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Ytterbium zirconate (Yb2Zr2O7) is one of the most promising materials for yttria-stabilized zirconia (YSZ) replacement as a thermal barrier coating (TBCs) application. In the presented report, the experimental synthesis of Yb2Zr2O7 coating using novel Reactive Plasma Spray Physical Vapor Deposition (Reactive PS-PVD) is described. The obtained coating, irrespective of the power current (1800, 2000 and 2200 A), was characterized by a hybrid structure and a thickness of about 80–110 μm. The results of XRD phase analysis showed the formation of ytterbium zirconate in the coating but the presence of ytterbium and zirconium oxides was also detected. The oxides were not observed in calcinated powder. The decrease in thermal conductivity with power current increase was observed. It was the result of higher thickness and better columnar structure of the coating obtained using higher power current of the plasma torch.

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