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Journal articles on the topic 'The concentration and structural ordering'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Koirala, Ishwar. "Chemical Ordering of Ag-Au Alloys in the Molten State." Journal of Institute of Science and Technology 22, no. 2 (2018): 191–201. http://dx.doi.org/10.3126/jist.v22i2.19612.

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Simple statistical model has been used to report the thermodynamic, structural, transport and surface properties of liquid Ag-Au alloys at 1350K. In thermodynamic properties we have studied the free energy of mixing, heat of mixing, entropy of mixing and the chemical activity of both components of the alloys. For the structural investigation, our study includes concentration fluctuation in long wave length limit and Warren-Cowley short range order parameter. Viscosity and diffusivity of the alloys have been studied to understand transport properties. The surface behavior has been analyzed by c

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2

Komarov, Pavel V., and Lubov V. Zherenkova. "Long- and Intermediate-Range Correlations in Polymer-Containing Ionic Liquids." ISRN Physical Chemistry 2012 (October 26, 2012): 1–10. http://dx.doi.org/10.5402/2012/397052.

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Structure on long- and intermediate-length scales in polymer-containing ionic liquids is investigated on the basis of the polymer integral equation method. The structural features of flexible homopolymer chains and the ions of the solvent are analyzed in reciprocal space using partial structure factors. There is a range of polymer concentrations at which the long-range correlations of polymer chains are observed. When these correlations are pronounced, the decrease of the characteristic scale of the long-range polymer ordering with increasing polymer concentration fits a power law. The effect

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3

Ranjkesh, Amid, Milan Ambrožič, and Mitja Slavinec. "Study of phase transitions and structural order in perturbed nematic liquid crystals." Anali PAZU 3, no. 2 (2022): 57–67. http://dx.doi.org/10.18690/analipazu.3.2.57-67.2013.

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We studied the typical domain size and configuration character of randomly perturbed nematic liquid crystal system, or in general the system of rod-like objects which interact via a Lebwohl–Lasher-type interaction. We described their local direction with a headless unit director field. We introduced into the system the impurities of concentration p, which impose the random anisotropy field-type disorder to directors. We studied the domain-type pattern of molecules as a function of p, anchoring strength W between a neighboring director and impurity, temperature, and history of samples. In simul

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4

Panthi, Narayan, Indra Bahadur Bhandari, and Ishwar Koirala. "Structural Asymmetry in two Thallium-based Alloys: Tl-Mg and Tl-Na." Journal of Institute of Science and Technology 29, no. 1 (2024): 25–33. http://dx.doi.org/10.3126/jist.v29i1.53511.

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Different modelled equations are used to analyze the variation of the thermodynamic, microscopic and surface characteristics between the Tl-Mg and Tl-Na liquid alloys at 1000 K by considering TlNa2 and TlMg2 complexes. The Thermodynamic properties are studied under Quasi-Chemical Approximation and the agreement between theoretical and experimental results of thermodynamic properties about their melting temperatures verifies the validity of model. The transport and surface properties of the alloys are studied by Kaptay and Butler models respectively. From the theoretical observations, it is sho

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5

Urusova, N. V., A. I. Merentsov, E. A. Stepanov, and O. G. Reznitskikh. "Features of structural ordering and magnetic properties of the cobalt intercalates of titanium dichalcogenides." Chalcogenide Letters 20, no. 5 (2023): 343–51. http://dx.doi.org/10.15251/cl.2023.205.343.

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CoxTiS2 (x = 0.20, 0.30, 0.50, 0.75) compounds have a layered crystal structure with Ti atoms surrounded by the S octahedrons in the S-Ti-S layers and Co ions which could be surrounded both by the S octahedrons and tetrahedrons. The features of the crystal structure and magnetic properties of the polycrystalline CoxTiS2 samples were studied as a function of the cobalt concentration using X-ray diffraction and magnetization measurements. The disordered state of the Co atoms (x < 0.20) changes to the ordered one (x ≥ 0.20). The magnetic ordering arises at x = 0.20 with mostly antiferromagneti

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6

Olajire, B. A., and A. A. Musari. "Thermodynamic and structural properties of liquid Al–Au alloys." International Journal of Modern Physics B 31, no. 20 (2017): 1750134. http://dx.doi.org/10.1142/s021797921750134x.

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The mixing properties of liquid Al–Au alloys with respect to the concentration of each constituent is determined using a method based on hard sphere system and pseudo-potential perturbation. These models were used to get relevant information on mixing properties of the Al–Au alloys like the Gibbs energy and the entropy of mixing. The concentration fluctuations, chemical short range order for the hard sphere mixture (quasi-lattice theory) and the activity are calculated to know the extent of order in the liquid alloys. The results revealed that there is a degree of ordering in liquid Al–Au allo

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7

Shen, Y., D. R. Richards, D. G. Hinks, and A. W. Mitchell. "Chemistry and structural modulations in Bi2Sr2CuO6." Journal of Materials Research 7, no. 4 (1992): 844–52. http://dx.doi.org/10.1557/jmr.1992.0844.

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A series of samples along the composition lines Bi2+xSr2−xCuOy, and Bi2Sr2−xCuOy have been used to study the structural modulation, chemistry, and superconducting properties of pseudo-tetragonal Bi2Sr2CuO6 (2201). The 2201 phase can be formed from crystallization of thin glassy platelets. The sample displayed a strong crystallographic (00l) orientation which made it possible to determine incommensurate modulations near (00l) reflections using a conventional x-ray θ-2θ scan. From the crystallization of the 2201 phase, it was found that structural modulation was intrinsic to the phase, and order

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8

Yadav, Shashit Kumar, Upendra Mehta, Ram Prasad Koirala, and Ramesh Kumar Gohivar. "Mixing properties of liquid Al-Au alloys." BIBECHANA 20, no. 1 (2023): 86–91. http://dx.doi.org/10.3126/bibechana.v20i1.53776.

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The thermodynamic and structural properties of liquid Al-Au alloy have been studied in frame-work of R-K polynomial using temperature-dependent energy interaction parameters at different temperatures. Thermodynamic properties, excess free energy of mixing and activity, and in structural properties, concentration fluctuation in long wave-length limit have been computed at temperatures 1338 K, 1500 K and 1600 K. The properties, such as surface tension and surface concentration of the system have been computed at above mentioned temperatures using Butler model. The system shows transformation fro

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9

Yadav, Pinki, Ankur Sharma, Indranil Bhaumik, and Gurvinderjit Singh. "Effect of electric field induced structural ordering on photo-luminescence and piezoelectric response of praseodymium doped (Na_0.41K_0.09Bi_0.5)TiO₃ ceramics." Journal of Applied Physics 132, no. 22 (2022): 224104. http://dx.doi.org/10.1063/5.0129083.

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A correlation of the ferroelectric and photoluminescence response to the structural ordering of praseodymium doped (Na0.41K0.09Bi0.5)TiO3 has been investigated. It has been observed that the ferroelectric and photoluminescence response lacks one-to-one correlation. The ferroelectric response is generally driven by long-range polar ordering. On the contrary, photoluminescence response is concomitant to the local site symmetry around the praseodymium ion. The optimum ferroelectric response has been observed for 1.0 at. % praseodymium doped (Na0.41K0.09Bi0.5)TiO3, whereas for the sample with high

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10

Kurko, Sandra, Ljiljana Matovic, Nikola Novakovic, et al. "Changes of structural and hydrogen desorption properties of MgH2 indused by ion irradiation." Chemical Industry 64, no. 3 (2010): 227–32. http://dx.doi.org/10.2298/hemind091221034k.

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Changes in structural and hydrogen desorption properties of MgH2 induced by ion irradiation have been investigated. MgH2 powder samples have been irradiated with 45 keV B3+ and 120 keV Ar8+ions, with ion fluence of 1015 ions/cm2. The effects of ion irradiation are estimated by numerical calculations using SRIM package. The induced material modifications and their consequences on hydrogen dynamics in the system are investigated by XRD, particle size distribution and TPD techniques. Changes of TPD spectra with irradiation conditions suggest that there are several mechanisms involved in desorptio

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11

Smith, Gregory P., Tommaso P. Fraccia, Marco Todisco, et al. "Backbone-free duplex-stacked monomer nucleic acids exhibiting Watson–Crick selectivity." Proceedings of the National Academy of Sciences 115, no. 33 (2018): E7658—E7664. http://dx.doi.org/10.1073/pnas.1721369115.

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We demonstrate that nucleic acid (NA) mononucleotide triphosphates (dNTPs and rNTPs), at sufficiently high concentration and low temperature in aqueous solution, can exhibit a phase transition in which chromonic columnar liquid crystal ordering spontaneously appears. Remarkably, this polymer-free state exhibits, in a self-assembly of NA monomers, the key structural elements of biological nucleic acids, including: long-ranged duplex stacking of base pairs, complementarity-dependent partitioning of molecules, and Watson–Crick selectivity, such that, among all solutions of adenosine, cytosine, gu

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12

Al-Hanbali, O., K. J. Rutt, D. K. Sarker, A. C. Hunter, and S. M. Moghimi. "Concentration Dependent Structural Ordering of Poloxamine 908 on Polystyrene Nanoparticles and Their Modulatory Role on Complement Consumption." Journal of Nanoscience and Nanotechnology 6, no. 9 (2006): 3126–33. http://dx.doi.org/10.1166/jnn.2006.406.

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Adsorption of poloxamine 908, a tetrafunctional polyethylene oxide (PEO)-polypropylene oxide ethylenediamine block copolymer, onto the surface of monodispersed polystyrene nanoparticles (232±0.33 nm) follows a bimodal pattern. Initially, the isotherm follows a Langmuir profile with a plateau observable over a very narrow equilibrium poloxamine concentration (0.0018–0.0031 mM). The isotherm then begins to rise again, reaching a final plateau at equilibrium poloxamine concentrations above 0.0089 mM. Similarly, the profile of the adsorbed layer thickness of poloxamine on the surface of nanopartic

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13

Davey, Theresa, and Ying Chen. "The effect of oxygen impurities on the stability and structural properties of vacancy-ordered and -disordered ZrC_x." RSC Advances 12, no. 6 (2022): 3198–215. http://dx.doi.org/10.1039/d1ra07768f.

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First-principles calculations are used to explore vacancy ordering in zirconium carbide at various stoichiometries as affected by oxygen impurities. Atomic bonding and electronic charge distribution are linked to stability and volume trends as a function of O concentration.

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14

Golovko, M. F., and L. A. Protsykevych. "Solutions of Sodium in Liquid Ammonia as Described by a Hard Sphere Charge-Dipole Model in the Neutralizing Background." Zeitschrift für Naturforschung A 46, no. 1-2 (1991): 19–26. http://dx.doi.org/10.1515/zna-1991-1-204.

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AbstractThe analytic solution of the mean spherical approximation obtained by us previously for the ion-dipole system in a neutralizing background is applied to study the structural, thermodynamic and dielectric properties of sodium-ammonia solutions. It is shown that the structure of ammonia is closepacked and changes little with ion concentration. The shape of the ion-ion distribution function changes from solvation behaviour with Debye-like asymptotics at low ion concentration to density ordering in the metalic region.

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15

Pavlyk, Bohdan, Markijan Kushlyk, Dmytro Slobodzyan, Igor Matvijishyn, Roman Lys, and Marek Jałbrzykowski. "Radiation-Stimulated Changes in the Characteristics of Surface-Barrier Al–Si–Bi Structures with Different Concentrations of Dislocations at the Crystal Surface." Acta Mechanica et Automatica 12, no. 1 (2018): 72–77. http://dx.doi.org/10.2478/ama-2018-0012.

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AbstractWe report the results of studies for the radiation-stimulated changes in electro-physical characteristics of surface-barrier Al–Si–Bi structures based on p-Si. We demonstrate that the X-ray irradiation is accompanied by different processes which depend on the density of the dislocations in the original silicon crystals. A usual evolution of the existing structural defects and their radiation-stimulated ordering dominate when the concentration remains low enough. Increase in the concentration causes the increasing role of generation of additional radiation defects. Modelling of the unde

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16

Ražnjević, Sergej, Sandra Drev, Andreas E. Bumberger та ін. "Structural Characterization of La0.6Sr0.4CoO3−δ Thin Films Grown on (100)-, (110)-, and (111)-Oriented La0.95Sr0.05Ga0.95Mg0.05O3−δ". Materials 17, № 8 (2024): 1802. http://dx.doi.org/10.3390/ma17081802.

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In this study, a detailed structural characterization of epitaxial La0.6Sr0.4CoO3−δ (LSC) films grown in (100), (110), and (111) orientations was conducted. LSC is a model air electrode material in solid oxide fuel and electrolysis cells and understanding the correlation of bulk structure and catalytic activity is essential for the design of future electrode materials. Thin films were grown on single crystals of the perovskite material La0.95Sr0.05Ga0.95Mg0.05O3−δ cut in three different directions. This enabled an examination of structural details at the atomic scale for a realistic material c

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17

Stadnyk, Yu, V. A. Romaka, A. Horyn та ін. "Modeling of structural and energetic parameters of р-Er1-xScxNiSb semiconductor". Physics and Chemistry of Solid State 22, № 3 (2021): 509–15. http://dx.doi.org/10.15330/pcss.22.3.509-515.

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The energy expediency of the existence of Er1-xScxNiSb substitutional solid solution up to the concentration x≈0.10 was established by modeling the variation of free energy ΔG(x) values (Helmholtz potential). At higher Sc concentrations, x> 0.10, there is stratification (spinoidal decomposition of phase). It is shown that in the structure of p-ErNiSb semiconductor there are vacancies in positions 4a and 4c of Er and Ni atoms, respectively, generating structural defects of acceptor nature. The number of vacancies in position 4a is twice less than in position 4c. This ratio also remains for p

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18

Sist, Mattia, Ellen Marie Jensen Hedegaard, Sebastian Christensen, et al. "Carrier concentration dependence of structural disorder in thermoelectric Sn1−xTe." IUCrJ 3, no. 5 (2016): 377–88. http://dx.doi.org/10.1107/s2052252516012707.

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SnTe is a promising thermoelectric and topological insulator material. Here, the presumably simple rock salt crystal structure of SnTe is studied comprehensively by means of high-resolution synchrotron single-crystal and powder X-ray diffraction from 20 to 800 K. Two samples with different carrier concentrations (sampleA= high, sampleB= low) have remarkably different atomic displacement parameters, especially at low temperatures. Both samples contain significant numbers of cation vacancies (1–2%) and ordering of Sn vacancies possibly occurs on warming, as corroborated by the appearance of mult

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19

Koirala, RP, IS Jha, BP Singh, and D. Adhikari. "Structural study of liquid Sn-Tl alloys." BIBECHANA 11 (May 8, 2014): 46–52. http://dx.doi.org/10.3126/bibechana.v11i0.10379.

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The concentration fluctuations in long wavelength limit, Scc(0) and the Warren-Cowley short range order parameter (α1) are important microscopic functions which provide valuable information about the local arrangements of the constituent atoms in the alloy melts. In order to investigate the nature of atomic ordering in Sn-Tl alloy in the molten state at 723K, we have computed these functions using theoretical models. The models satisfactorily explain the small asymmetry observed in the experimental data of free energy of mixing of the alloy. The comparative study further reveals that the energ

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20

Zhumatayeva, I. Zh, A. L. Kozlovskiy, M. V. Zdorovets, R. I. Shakirzyanov, and A. V. Trukhanov. "STUDY OF THE INFLUENCE OF VARIATIONS IN THE PHASE COMPOSITION ON THE DIELECTRIC PROPERTIES OF FERROELECTRIC CaTiO<sub>3</sub> CERAMICS DOPED WITH Y<sub>2</sub>O<sub>3</sub>." NNC RK Bulletin, no. 3 (October 7, 2023): 160–67. http://dx.doi.org/10.52676/1729-7885-2023-3-160-167.

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The study of the relationship between the effect of phase composition variation on the dielectric characteristics of ferroelectric ceramics is one of the most important fundamental questions, the answer to which will allow us to determine the potential of using ferroelectrics in microelectronic applications and the creation of alternative energy sources (solid oxide fuel cells). The purpose of this study is to explore the effect of the Y2O3 dopant on the phase formation processes and the properties of the synthesized ferroelectric ceramics of calcium titanate, as well as to establish the conne

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21

Zafaran, Abdul Fattah. "STRUCTURAL AND TRANSPORT PROPERTIES OF TE DOPED LAMNO3." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 9 (2016): 139–52. https://doi.org/10.5281/zenodo.61478.

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The main aim of this project is to study the structural and transport properties of La1-xTexMnO3at (x=0.1 and 0.15). The brief discussion on the progress of this project is given that the samples were characterized using x-ray diffraction (XRD) technique. This gives the information of the crystal symmetry, structure and lattice parameters, which varies with the Te concentration. Further, the electrical resistivity data, which confirm the effect of carrier doping in the system, was analyzed. The resistivity data was also fitted in the Mott’s variable range hopping (VRH) model in the high

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22

Leonidov, Ilia A., Alexey A. Markov, Mikhail A. Zavyalov та ін. "Structural Features and Defect Equilibrium in Cubic PrBa1−xSrxFe2O6−δ". Materials 15, № 13 (2022): 4390. http://dx.doi.org/10.3390/ma15134390.

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The structure, oxygen non-stoichiometry, and defect equilibrium in perovskite-type PrBa1−xSrxFe2O6−δ (x = 0, 0.25, 0.50) synthesized at 1350 °C were studied. For all compositions, X-ray diffraction testifies to the formation of a cubic structure (S.G. Pm3¯m), but an electron diffraction study reveals additional diffuse satellites around each Bragg spot, indicating the primary incommensurate modulation with wave vectors about ±0.43a*. The results were interpreted as a sign of the short-order in both A-cation and anion sublattices in the areas of a few nanometers in size, and of an intermediate

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23

Cheng, Shangcong. "Structures of Sodium Silicate Glass." Non-Metallic Material Science 3, no. 2 (2021): 39–45. http://dx.doi.org/10.30564/nmms.v3i2.4070.

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The structural model of sodium silicate glass plays a crucial role in understanding the properties and the nature of binary glass and other more complicated silicate glasses. This work proposes a structural model for sodium silicate glass based on the medium-range ordering structure of silica glass and the information found from the Na2O-SiO2 phase diagram. This new model is different from previous ones. First, the sodium silica glass is both structurally and chemically heterogeneous on the nanometer scale. Secondly, the sodium cation distribution is Na2O concentration-dependent. In order to r

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24

Sidorov, Nikolay, Roman Titov, Natalya A. Teplyakova, Mikhail Palatnikov, and Alexander Vjacheslavovich Syuy. "Structural Features of Nominally Pure Lithium Niobate Crystals Grown from Boron-Doped Charge." Solid State Phenomena 312 (November 2020): 128–33. http://dx.doi.org/10.4028/www.scientific.net/ssp.312.128.

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The features of the structure of single crystals LiNbO3:B3+ (0.12 and 0.18 wt %) grown by the Czochralski method from the mixture of different genesis were studied. It was found that boron is able to incorporate into the crystal structure of lithium niobate in a trace amounts (~ 10–4–10–5 wt %), decreasing the concentration of structural defects NbLi. Thus, ordering of structural units of the cation sublattice of lithium niobate crystals grown from a congruent composition melt approach in that of stoichiometric crystals.

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25

Modak, D. K., G. Banerjee, M. Karar, et al. "Nonlinear physical properties of some nonconventional semiconducting Bi–Pb–Ba–O glasses." Journal of Materials Research 13, no. 8 (1998): 2328–33. http://dx.doi.org/10.1557/jmr.1998.0325.

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Semiconducting Bi1−xPbxBaO3−δ (or BPB) glasses with x = 0 to 0.8 have been prepared by fast quenching from the melt. Interesting anomalies in the temperature-dependent polaronic conductivity and dielectric constant have been observed in all these glass compositions at temperatures, Tp, varying from 310 to 330 K (depending on Pb concentration). This nonlinear behavior is considered to be associated with the local ordering or the displacements of the BiO3 type pyramidal structural units present in the glass matrix (observed from the infrared spectra of these glasses). This type of ordering/displ

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26

Ivanova, Nikoleta, and Hassan Chamati. "The Effect of Cholesterol in SOPC Lipid Bilayers at Low Temperatures." Membranes 13, no. 3 (2023): 275. http://dx.doi.org/10.3390/membranes13030275.

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We study the behavior of lipid bilayers composed of SOPC (1-stearoyl-2-oleoyl-sn-glycero-3-phosphocholine) with different concentrations of cholesterol, ranging from 10 mol% to 50 mol% at 273 K. To this end, we carry out extensive atomistic molecular dynamic simulations with the aid of the Slipid force field aiming at computing basic bilayer parameters, as well as thermodynamic properties and structural characteristics. The obtained results are compared to available relevant experimental data and the outcome of atomistic simulations performed on bilayers composed of analogous phospholipids. Ou

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27

Delibasic, Jelena, Tanja Barudzija, Vladan Kusigerski, et al. "Structural and magnetic properties of Y1-xGdxTiO3 solid solution." Science of Sintering, no. 00 (2025): 28. https://doi.org/10.2298/sos250424028d.

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The structural and magnetic properties of novel polycrystalline samples of Y1-xGdxTiO3 (x = 0, 0.25, 0.5, 0.75 and 1) solid solutions are examined in this paper. The preparation of all samples was accomplished through arc melting synthesis, which involved the use of a suitable mixture of commercial Y2O3, Gd2O3, TiO2 and Ti powders under an argon atmosphere. The crystal structure of the Y1-xGdxTiO3 solid solutions was determined to be a single orthorhombic perovskite (GdFeO3 type) by X-ray diffraction. The Y1-xGdxTiO3 system exhibits a long-range magnetic ordering below temperature TC that syst

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28

Liu, Shiquan, Pegie Cool, Olivier Collart, et al. "The Influence of the Alcohol Concentration on the Structural Ordering of Mesoporous Silica: Cosurfactant versus Cosolvent." Journal of Physical Chemistry B 107, no. 38 (2003): 10405–11. http://dx.doi.org/10.1021/jp034410w.

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29

Calvo, Florent. "Structural relaxation in Ag-Ni nanoparticles: atomistic modeling away from equilibrium." European Physical Journal Applied Physics 97 (2022): 16. http://dx.doi.org/10.1051/epjap/2021210246.

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The out-of-equilibrium structural relaxation of Ag-Ni nanoparticles containing about 1000–3000 atoms was investigated computationally by means of molecular dynamics trajectories in which the temperature is decreased gradually over hundreds of nanoseconds. At low silver concentration of 10–30%, the evolution of chemical ordering in NicoreAgshell nanoparticles with different surface arrangements is found to proceed spontaneously and induce some rounding of the nickel core and its partial recrystallization. Fast cooling of an initially hot metal vapor mixture was also considered, and it is shown

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30

TOCI, F., A. SCHUERENKAEMPER, N. TOUSSAINT, M. CAMBINI, and L. MANES. "THERMODYNAMIC STUDY ON YBa2Cu3C7−x." Modern Physics Letters B 02, no. 10 (1988): 1189–98. http://dx.doi.org/10.1142/s0217984988001120.

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Results are related to ordering of oxygen vacancies in the YBa 2 Cu 3 O 7−x lattice. The concentration and ordering of oxygen in the lattice of YBa 2 Cu 3 O 7−x are fundamental for its superconducting properties. Partial free energies, enthalpies and entropies of YBa 2 Cu 3 O 7−x have been obtained from oxygen standard potential measurements performed between 700 and 1100 K, by means of a miniaturized solid state galvanic cell. The oxygen molar content of the phases investigated was between 6.65 and 6.95. Oxygen diffusion kinetics was also studied by means of the same apparatus, by following t

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31

Carretta, P., P. Manca, and S. Sanna. "Effect of CuO Chains Ordering on the Opening of the Spin-Gap in YBa2Cu3O6+x." International Journal of Modern Physics B 13, no. 09n10 (1999): 1221–27. http://dx.doi.org/10.1142/s0217979299001211.

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The authors report on 63 Cu NMR relaxation measurements in YBa 2 Cu 3 O 6+x samples having similar T c's but a different structural ordering of the Cu(1)O chains. It is found that the gap in the spin excitations estimated from 63 Cu (2) nuclear spin-lattice relaxation rate 1/T1, varies from 110 K up to 190 K depending on the sample. This observation suggests that there is not a one to one relationship between the hole concentration and the amplitude of the spin-gap in the normal state of YBa 2 Cu 3 O 6+x. The sizeable variation in the gap, related to the different ordering of the Cu(1)O chains

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32

Pajic-Lijakovic, Ivana, Branko Bugarski, and Milenko Plavsic. "Rheological examination of erythrocyte aggregation in the presence of lipid-based fine particles." Chemical Industry and Chemical Engineering Quarterly 11, no. 2 (2005): 49–54. http://dx.doi.org/10.2298/ciceq0502049p.

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The development of lipid-based fine particles as potential drug carriers requires a detailed investigation of the possible effects of these carriers on the rheological properties of blood. In this study, we investigated the influence of dynamic conditions on aggregate formation and stability in dispersions of lipid-based fine particles in whole blood under in vitro conditions. The rheological parameters of two concentrations of liposome dispersion and two concentrations of lipid emulsion in blood were examined. A micro-rheological model of aggregating dispersions is proposed in which the appar

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Shlimas, D. I., A. Khametova, and A. L. Kozlovskiy. "STUDY OF THE INFLUENCE OF MgO DOPING ON THE THERMOPHYSICAL PROPERTIES OF CERAMICS BASED ON LITHIUM METAZIRCONATE." NNC RK Bulletin, no. 3 (October 6, 2023): 33–39. http://dx.doi.org/10.52676/1729-7885-2023-3-33-39.

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The paper presents the results of studying the effect of doping with magnesium oxide (MgO) of lithium-containing ceramics based on lithium metazirconate (Li2ZrO3) on the change in the thermophysical parameters of ceramics. The method of mechanochemical synthesis followed by high-temperature annealing at a temperature of 1300 °C, used to initiate the processes of phase transformations from structural ordering, was chosen as the main method for obtaining ceramics, as well as for performing MgO doping processes. In the course of the studies, it was found that an increase in the concentration of t

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Chattaraj, Ananya, Joshua Asirvatham, Gangadhar Das та ін. "Growth-dependent structural ordering and stability in β-tungsten films for spintronic applications". Journal of Applied Physics 131, № 12 (2022): 125301. http://dx.doi.org/10.1063/5.0087436.

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The β phase of tungsten has attracted great interest for spintronic applications due to its higher spin Hall angle compared to other elemental solids and large spin–orbit torque, but the stability of this phase is yet to be well understood as many different results are there in the literature mainly based on the film thickness, temperature, and overall growth conditions. The growth of films by sputter deposition has emerged as a promising technique to achieve β-W owing to its compatibility with current spintronic technology. We demonstrate here the efficient ability of dc magnetron sputtering

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Шерокалова, Е. М., Н. В. Селезнева та В. Г. Плещев. "Электрические и магнитные свойства диселенида ванадия, интеркалированного атомами хрома". Физика твердого тела 64, № 4 (2022): 437. http://dx.doi.org/10.21883/ftt.2022.04.52183.256.

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The study of the structural characteristics, electrical and magnetic properties was carried out on synthesized samples of vanadium diselenide intercalated with chromium atoms. Structural studies have shown a decrease in the symmetry of the crystal lattice from hexagonal to monoclinic with an increase in the concentration of intercalated atoms, caused by their ordering in the Van der Waals gap. In this case, a change in the resistive state occurs in samples of different compositions, which are characterized by opposite thermal coefficients of electrical resistance. The values of the effective m

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36

Sherokalova E. M., Selezneva N. V., and Pleshchev V. G. "Electrical and magnetic properties of vanadium diselenide intercalated with chromium atoms." Physics of the Solid State 64, no. 4 (2022): 422. http://dx.doi.org/10.21883/pss.2022.04.53498.256.

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The study of the structural characteristics, electrical and magnetic properties was carried out on synthesized samples of vanadium diselenide intercalated with chromium atoms. Structural studies have shown a decrease in the symmetry of the crystal lattice from hexagonal to monoclinic with an increase in the concentration of intercalated atoms, caused by their ordering in the Van der Waals gap. In this case, a change in the resistive state occurs in samples of different compositions, which are characterized by opposite thermal coefficients of electrical resistance. The values of the effective m

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37

Sidorov, N. V., N. A. Teplyakova, M. N. Palatnikov, and L. А. Bobreva. "Investigation of Structural Re-ordering of Hydrogen Bonds in LiNbO3:Mg Crystals Around the Threshold Concentration of Magnesium." Journal of Applied Spectroscopy 84, no. 4 (2017): 549–54. http://dx.doi.org/10.1007/s10812-017-0509-0.

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38

Thu Huong, Ngo, Seunghun Lee, Timur Sh Atabaev, Makio Kurisu, and Nguyen Hoa Hong. "Rare Earth-Doped BiFeO3Thin Films: Relationship between Structural and Magnetic Properties." Advances in Condensed Matter Physics 2015 (2015): 1–5. http://dx.doi.org/10.1155/2015/371802.

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Rare Earth- (RE-) doped BiFeO3(BFO) thin films were grown on LaAlO3substrates by using pulsed laser deposition technique. All of BFO films doped with 10% of RE show a single phase of rhombohedral structure. The saturated magnetization in the Ho- and Sm-doped films is much larger than those reported in literature and was observed at a quite low field as of 0.2 T. As for Pr- and Nd-doped BFO films, Fe2+amount is not dominant; thus, ferromagnetism is not favored. As the RE concentration goes up to 20%, all compounds have drastically gone through a structural transition. The RE-doped BFO films hav

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39

Golba, Sylwia, Magdalena Popczyk, Seweryn Miga, et al. "Impact of Acidity Profile on Nascent Polyaniline in the Modified Rapid Mixing Process—Material Electrical Conductivity and Morphological Study." Materials 13, no. 22 (2020): 5108. http://dx.doi.org/10.3390/ma13225108.

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Polyaniline (PANI) was synthesized chemically with the modified rapid mixing protocol in the presence of sulfuric acid of various concentrations. A two-step synthetic procedure was utilized maintaining low-temperature conditions. Application of the modified rapid mixing protocol allowed obtaining a material with local ordering. A higher concentration of acid allowed obtaining a higher yield of the reaction. Structural characterization performed with Fourier-transform infrared (FTIR) analysis showed the vibration bands characteristic of the formation of the emeraldine salt in both products. Ult

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Lee, H. K. "Structure and magnetic properties of (Ru0.9Nb0.1)Sr2(Gd1.34−xNdxCe0.66)Cu2Oz system." International Journal of Modern Physics B 29, no. 25n26 (2015): 1542030. http://dx.doi.org/10.1142/s0217979215420308.

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Polycrystalline samples of [Formula: see text] [Formula: see text] have been synthesized and characterized by X-ray diffraction (XRD), electrical resistivity, thermoelectric power and magnetization measurements. Resistivity measurements revealed that the onset transition temperature [Formula: see text] decreased slightly from [Formula: see text] for [Formula: see text] to [Formula: see text] for [Formula: see text]. Magnetization measurements showed that the partial substitution of [Formula: see text] by [Formula: see text] leads to a significant decrease in the magnetic ordering temperature.

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41

Mariette, Céline, Elzbieta Trzop, Serhane Zerdane, et al. "Formation of local spin-state concentration waves during the relaxation from a photoinduced state in a spin-crossover polymer." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 73, no. 4 (2017): 660–68. http://dx.doi.org/10.1107/s2052520617007685.

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The complex relaxation from the photoinduced high-spin phase (PIHS) to the low-spin phase of the bimetallic two-dimensional coordination spin-crossover polymer [Fe[(Hg(SCN)3)2](4,4′-bipy)2]nis reported. During the thermal relaxation, commensurate and incommensurate spin-state concentration waves (SSCWs) form. However, contrary to the steps forming at thermal equilibrium, associated with long-range SSCW order, the SSCWs forming during the relaxation from the PIHS phase correspond to short-range order, revealed by diffuse X-ray scattering. This is interpreted as resulting from the competition be

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42

Kikuchi, Hirotsugu, Takahiro Ashimine, Zehui Qin, Hiroki Higuchi, Shizuka Anan, and Yasushi Okumura. "Enhancement of Polymer Structural Ordering in Polymer-Stabilised Blue Phases for Improved Electro-Optical Properties." Symmetry 13, no. 5 (2021): 772. http://dx.doi.org/10.3390/sym13050772.

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Polymer-stabilised blue phase (PSBP) could be employed in novel fast response optical and photonic devices. It is inferred that inside PSBPs, the polymers are selectively aggregated by location in −1/2 disclinations, which are defects coexisting with the blue phase as a periodic lattice, thereby extending the temperature range of the blue phase. The polymer aggregate structure in PSBPs strongly affects their physical properties. In this study, we employed a non-destructive synchrotron ultra-small-angle X-ray diffraction analysis to investigate the effect of polymerisation rates on the polymer

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Kumar, Abhinav, Venkata Seshaiah Katta, Sai Santosh Kumar Raavi, and Saket Asthana. "Effect of electrical poling on the structural, dielectric and photoluminescence properties of small concentration of Ho⁺³ substituted NBT." Journal of Physics: Conference Series 2070, no. 1 (2021): 012016. http://dx.doi.org/10.1088/1742-6596/2070/1/012016.

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Abstract The effect of electrical poling on the room temperature structural, dielectric and photoluminescence properties of small concentration (i.e. 0.5 mole%) of Ho+3 substituted sodium bismuth titanate ferroelectric material (Na0.5Bi0.495Ho0.005TiO3 abbreviated as NBT-0.5Ho) has been investigated. Its crystal structure was found to be the mixture of two phases of rhombohedral (R3c) and monoclinic (Cc) in which monoclinic (Cc) coexisted as major phase. Comparative study of X-ray diffraction (XRD) patterns of electrically poled and unpoled specimens of NBT-0.5Ho revealed that electric field i

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Amir, M., S. Atiq, S. Riaz, and S. Naseem. "Effect of Ba-Substitution at Sr-Site on the Structural and Dielectric Characteristics of SrMnO3." Nucleus 52, no. 4 (2015): 155–58. https://doi.org/10.71330/thenucleus.2015.632.

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Antiferromagnetic Ba substituted SrMnO3 has a perovskite structure with a B-site magnetic ion which gives higher magnetic ordering temperatures. Ferroelectric transitions in these perovskites have been observed due to off centering of Mn4+ ions. In this work, we report synthesis of Sr1-xBaxMnO3 (x= 0.2, 0.4, 0.6 and 0.8) samples using sol-gel auto-ignition method. The prepared samples were sintered at 1000 ÂºC for 4 hours each which ultimately led to the development of the perovskite structure, as determined by X-ray diffraction. The crystallite size was determined by using Scherrerâ€™s formul

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45

Mishra, K. K., H. K. Limbu, B. Yadav, A. K. Khan, I. S. Jha, and D. Adhikari. "Thermodynamic, structural, surface and transport properties of Zn-Cd liquid alloy at 800 K." BIBECHANA 14 (November 28, 2016): 54–65. http://dx.doi.org/10.3126/bibechana.v14i0.15715.

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The mixing thermodynamic and structural properties of Zn-Cd liquid at 800K has been studied using Flory’s model. To explain the mixing properties of binary liquid alloys, size factor (ф) and ordering energy (ω) are taken into account. Thermodynamic properties like free energy of mixing (GM), activity (a), Heat of mixing (HM) and entropy of mixing (SM) and the microscopic properties like concentration fluctuation in the long wave length limit (Scc(0)) and chemical short range order parameter (α1) have been calculated. Surface property has also been studied with the help of Buttler’s model. The

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Ramírez-Hernández, Aurelio, Celia Aguilar-Flores, and Alejandro Aparicio-Saguilán. "Fingerprint analysis of FTIR spectra of polymers containing vinyl acetate." DYNA 86, no. 209 (2019): 198–205. http://dx.doi.org/10.15446/dyna.v86n209.77513.

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The analysis of materials using Fourier transform infrared (FTIR) spectroscopy has a unique area called the fingerprint region for each compound. However, this area is almost never discussed because of its complexity due to the large number of signals that appear in it. In this work, the fingerprint region analysis of the ethylene–vinyl acetate copolymer (EVA) with different percentages of vinyl acetate (VA) (18%, 28%, 40%) was performed. In comparison with other instrumental techniques, the crystallinity and structural arrangement of the EVA copolymers were determined simply and economically.

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Bohora, Chandra Kumar, and Ishwar Koirala. "Study of Thermodynamic Properties of Bi-Pb Liquid Alloy." Journal of Nepal Physical Society 8, no. 1 (2022): 82–87. http://dx.doi.org/10.3126/jnphyssoc.v8i1.48291.

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We have used quasi-lattice theory to describe the mixing behavior of Bi-Pb liquid alloys at a temperature of 700K by computing thermodynamic functions and structural functions. The thermodynamic functions includes free energy of mixing (GM), activity (a), heat of mixing (HM), entropy of mixing (SM). The structural functions includes concentration fluctuation in the long-wavelength limit (Scc(0)) and chemical short range order parameter (α1). Most of the computed values are in good agreement with the experimental data. The pair-wise interaction energies between the species of the liquid alloys

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Mahadeva, Sreekanth K., Zhi-Yong Quan, J. C. Fan, et al. "Suppression of Ferromagnetic Ordering in thicker co-sputtered Mn doped MgO Films." MRS Proceedings 1552 (2013): 83–88. http://dx.doi.org/10.1557/opl.2013.611.

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ABSTRACTWe report on preliminary studies of low (14 at.%) and high (53at.%) concentration Mn doped MgO films deposited by co-sputtering from metallic Mn and Mg targets. The structural, surface morphologies and magnetic properties of the films of different thickness were studied. All the as grown films are found to be amorphous and film surfaces are found to be flawless and homogeneous. We observe at room temperature robust ferromagnetic loops with a saturation magnetization value that is a function of film thickness reaching a maximum of ∼38.5 emu/cm3 in the Mn0.53Mg0.47O film at a thickness o

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49

Shmakov, Sergei L., Tatiana S. Babicheva, Valentina A. Kurochkina, Tatiana N. Lugovitskaya, and Anna B. Shipovskaya. "Structural and Morphological Features of Anisotropic Chitosan Hydrogels Obtained by Ion-Induced Neutralization in a Triethanolamine Medium." Gels 9, no. 11 (2023): 876. http://dx.doi.org/10.3390/gels9110876.

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For the first time, anisotropic hydrogel material with a highly oriented structure was obtained by the chemical reaction of polymer-analogous transformation of chitosan glycolate—chitosan base using triethanolamine (TEA) as a neutralizing reagent. Tangential bands or concentric rings, depending on the reaction conditions, represent the structural anisotropy of the hydrogel. The formation kinetics and the ratio of the positions of these periodic structures are described by the Liesegang regularities. Detailed information about the bands is given (formation time, coordinate, width, height, and f

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Yadav, S. K., U. Mehta, and R. K. Gohivar. "Thermodynamic, structural, surface and transport properties of Au-Cu melt." BIBECHANA 21, no. 2 (2024): 150–58. http://dx.doi.org/10.3126/bibechana.v21i2.66853.

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Thermodynamic, structural, surface and transport properties of Au-Cu liquid alloy were calculated on the basis of different theoretical modeling equations. The thermodynamic properties, such as excess Gibbs free energy of mixing, enthapy of mixing and activity were estimated and compared with the available experimental and literature data on the basis of simple theory of mixing (STM). The best fit values of model parameters were estimated using the experimental values of excess Gibbs free energy of mixing and enthalpy of mixing of the system at 1550 K. Using the same model parameters and frame

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