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Journal articles on the topic 'Bronze de tungstène'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Maksimovic, Tijana, Jelena Maksimovic, Ljubinka Joksovic, Zoran Nedic, and Maja Pagnacco. "Oscillatory reaction as a system detector for doped and undoped phosphate tungsten bronzes." Chemical Industry 72, no. 5 (2018): 275–83. http://dx.doi.org/10.2298/hemind180402018m.

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Phosphate tungsten bronzes, obtained by thermal treatment, are insufficiently investigated bronzes and there is scarce literature data on their chemical behavior and structure. Due to high-sensitivity of the Briggs-Rauscher (BR) reaction to addition of different analytes, this oscillatory reaction presents a potentially important chemical system for investigation and characterization of phosphate-tungsten bronzes, doped and undoped. The reaction mixture for the oscillatory BR reaction typically consists of H2O2, HClO4, KIO3, Mn(II) (catalyst), and CH2(COOH)2 (malonic acid, as an organic substr

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2

Abdullah, A. M., T. Debnath, C. H. Rüscher, and A. Hussain. "Synthesis and Characterization of Vanadium Substituted Potassium Tungsten Bronzes, K_xV_yW_1-yO₃." Journal of Scientific Research 4, no. 2 (2012): 507. http://dx.doi.org/10.3329/jsr.v4i2.9349.

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A series of vanadium substituted potassium hexagonal tungsten bronzes KxVyW1-yO3 (K-HTB) were prepared by conventional solid state method at 800 °C with compositions of x = 0.30 and 0.00 ? y ? 0.15. A mixture of K-HTB and non bronze phases with y ? 0.20 was observed. The proportion of this non bronze phase increases with increasing vanadium content. The non bronze phases in the mixture could not be indexed yet. In contrast, a very small amount of vanadium can be substituted in potassium tetragonal tungsten bronzes (K-TTB) at 800 °C with x = 0.50 and 0.00 ? y ? 0.02, however at 700 °C vanadium

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3

Maksimovic, Tijana, Jelena Maksimovic, Pavle Tancic, et al. "A possible connection between phosphate tungsten bronzes properties and Briggs-Rauscher oscillatory reaction response." Science of Sintering 53, no. 2 (2021): 223–35. http://dx.doi.org/10.2298/sos2102223m.

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The calcium phosphate tungsten bronze (Ca-PWB) has been synthesized and characterized (TGA, DSC, XRPD, FTIR, SEM). The influence of solid insoluble materials Ca- PWB, as well as lithium doped (Li-PWB) and cation free phosphate tungsten (PWB) bronzes on the oscillatory Briggs-Rauscher (BR) reaction dynamics, is compared. The results show that doping with Li and Ca reduces sensitivity of the BR reaction towards bronzes addition. These findings suggest the usage of the BR reaction as an innovative method for testing of different properties of bronze material. The behavior of PWB in the BR reactio

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4

Labbe, Ph. "Tungsten Oxides, Tungsten Bronzes and Tungsten Bronze-Type Structures." Key Engineering Materials 68 (January 1992): 293–0. http://dx.doi.org/10.4028/www.scientific.net/kem.68.293.

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5

Kihlborg, L., and M. Sundberg. "`Inverted Twinning' in Intergrowth Tungsten Bronzes." Acta Crystallographica Section B Structural Science 53, no. 1 (1997): 95–101. http://dx.doi.org/10.1107/s010876819601155x.

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A new type of twinning occurring in intergrowth tungsten bronzes (ITB) is described, revealed by high-resolution electron microscopy. Across the twin boundary the two structure elements of hexagonal tungsten bronze- and tetragonally distorted ReO3-types are interchanged and grow in strict geometrical relationship to each other. The structure is thus `inverted' and in the general case the two `twin' parts represent different members of the structure family. Some members remain invariant upon inversion, however. This defect is most often seen as ribbons in an ITB matrix in Mo-doped samples Cs x

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6

Luo, Jia Yu, Jing Xiao Liu, Fei Shi, et al. "Synthesis of Sodium Tungsten Bronze via Hydrothermal Method Assisted by Citric Acid." Advanced Materials Research 712-715 (June 2013): 280–83. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.280.

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Sodium tungsten bronze NaxWO3 powders have been prepared by hydrothermal method using sodium tungstate as raw material and citric acid as reducing agent, followed by annealing under the inert gas N2 atmosphere. The prepared powders were confirmed as tetragonal sodium tungsten bronze Na0.1WO3 by X-ray diffraction. The SEM observation showed that the as-prepared Na0.1WO3 particles exhibited rod-like morphology with about 20 μm in length and 5 μm in diameter. The influence of pH value of the precursor solution and annealing temperature on the synthesized powders were also investigated. The result

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7

Bludská, Jana, Jiří Vondrák, and Ivo Jakubec. "Insertion of Hydrogen and/or Lithium Into Cesium Tungsten Bronze." Collection of Czechoslovak Chemical Communications 62, no. 8 (1997): 1177–84. http://dx.doi.org/10.1135/cccc19971177.

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Hydrogen and/or lithium insertion into hexagonal cesium tungsten bronze, Cs0.3WO3, was studied using voltammetric and a.c. admittance methods. The close values of stoichiometric coefficients for hydrogen and/or lithium in coinsertion bronzes as well as the close values of diffusion coefficients DH and DLi are ascribed to a lattice distortion caused by large cesium species which influence both equilibrium and the mobility of inserting species regardless of their different chemical nature.

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8

Liu, Jing Xiao, Xiao Jie Wang, Fei Shi, et al. "Hydrothermal Synthesis of Cesium Tungsten Bronze and its Heat Insulation Properties." Advanced Materials Research 531 (June 2012): 235–39. http://dx.doi.org/10.4028/www.scientific.net/amr.531.235.

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Using sodium tungstate and cesium carbonate as raw materials, cesium tungsten bronze (CsxWO3) powders were synthesized by low temperature hydrothermal reaction with citric acid as the reducing agent. The CsxWO3 films were prepared on glass using polyvinyl alcohol solution as dispersing agent. The microstructure and morphology of CsxWO3 powders were characterized by XRD and SEM, and the optical spectra and heat insulation properties of CsxWO3 powder and films were investigated. The results indicate that the synthesized cesium tungsten bronze powders have hexagonal Cs0.32WO3 crystal structure. T

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9

Green, Mino, and A. Travlos. "Sodium-tungsten bronze thin films: I. Optical properties of dilute bronzes." Philosophical Magazine B 51, no. 5 (1985): 501–20. http://dx.doi.org/10.1080/13642818508244483.

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10

Green, Mino, and A. Travlos. "Sodium-tungsten bronze thin films: II. Electrical properties of dilute bronzes." Philosophical Magazine B 51, no. 5 (1985): 521–32. http://dx.doi.org/10.1080/13642818508244484.

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11

Aamlid, Solveig S., Sverre M. Selbach, and Tor Grande. "The Effect of Cation Disorder on Ferroelectric Properties of SrxBa1−xNb2O6 Tungsten Bronzes." Materials 12, no. 7 (2019): 1156. http://dx.doi.org/10.3390/ma12071156.

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The versatile crystal structure of tetragonal tungsten bronzes (A12A24C4B10O30) can accommodate complex stoichiometries including cations in different valence states and vacant cation sites. Here, we report on the effect of thermally induced cation-vacancy disorder in the tetragonal tungsten bronze SrxBa1−xNb2O6 (SBNX). SBNX (x = 0.25, 0.33, 0.50, 0.61) ceramics, prepared by conventional solid-state synthesis, were annealed at varying temperatures and subsequently quenched to room temperature. The Curie temperature of all the SBNX materials increased with higher quenching temperatures, accompa

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12

Benabbas, A., M. M. Borel, A. Grandin, A. Leclaire, and B. Raveau. "A niobium phosphate bronze closely related to the tungsten phosphate bronzes family: Na4Nb8P6O35." Journal of Solid State Chemistry 89, no. 1 (1990): 75–82. http://dx.doi.org/10.1016/0022-4596(90)90295-9.

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13

Zheng, X. H., and X. M. Chen. "Dielectric Ceramics with Tungsten-bronze Structure in the BaO–Nd2O3–TiO2–Nb2O5 System." Journal of Materials Research 17, no. 7 (2002): 1664–70. http://dx.doi.org/10.1557/jmr.2002.0245.

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Some tungsten-bronze compounds in the BaO–Nd2O3–TiO2–Nb2O5 system were prepared and characterized. Ba4Nd2Ti4Nb6O30 and Ba5NdTi3Nb7O30 had the filled tetragonal tungsten-bronze structure, and Ba3Nd3Ti5Nb5O30 consisted of the tetragonal tungsten-bronze major phase and a minor amount of secondary phase BaNd2Ti3O10. These compounds had significant relaxor behaviors, and the Curie temperatures (at 1 MHz) were 0 and 55 °C for Ba3Nd3Ti5Nb5O30 and Ba5NdTi3Nb7O30 ceramics, respectively. A high dielectric constant (213) combined with low dielectric loss (0.004 at 1 MHz) was obtained in Ba3Nd3Ti5Nb5O30 c

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14

GUO, JING-DONG, and M. STANLEY WHITTINGHAM. "TUNGSTEN OXIDES AND BRONZES: SYNTHESIS, DIFFUSION AND REACTIVITY." International Journal of Modern Physics B 07, no. 23n24 (1993): 4145–64. http://dx.doi.org/10.1142/s0217979293003607.

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The tungsten oxides and bronzes have been extensively studied since their discovery in the last century, because of their brilliant colors and high electrical conductivity. More recently the driving interest resulted from their potential use in electrochromic displays and other electrochemical systems. Their crystalline structures are generally based on the corner sharing of WO 6 octahedra giving tunnels of variable size and shape leading to exciting intercalation chemistry. These structures readily undergo redox reactions, and in the last quarter century these reactions have often involved so

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15

Zhou, Zong Hui, Pi Yi Du, Gao Rong Han, and Wen Jian Weng. "Effect of SrO/BaO Ratio on the Phase Structure of the BSTN Composite Ceramics." Key Engineering Materials 280-283 (February 2007): 111–14. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.111.

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The effect of SrO/BaO ratio on the phase structure of the (1-x)BaO.xSrO.0.7TiO2.0.3Nb2O5 composite ceramics was investigated by XRD and SEM. The results showed that the SrO/BaO ratio increased in the perovskite phase and kept almost constant in the tungsten bronze phase as the content of SrO increased in the composite system. The constant SrO/BaO ratio in the tungsten bronze phase was about 0.667. The crystal lattices of the perovskite phase in the composite system were larger and smaller respectively than that in pure (1-x)BaO.xSrO.TiO2 system when SrO/BaO ratio were respectively <0.667 an

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16

Wang, Xiaoli. "Phase transformation in Sr1−xBaxNb2O6 ceramics." Journal of Materials Research 12, no. 3 (1997): 600–603. http://dx.doi.org/10.1557/jmr.1997.0088.

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The phase transformation in Sr1−xBaxNb2O6 (0.25 ≤ x ≤ 0.8) ceramics was investigated. There is an intermediate transitive phase before forming the tungsten bronze phase at higher temperatures. The phase transformation from the intermediate type into tungsten bronze type is sluggish, affected principally by temperature. In the compositions rich in Ba (x > 0.672), Ba ions prefer to occupy the A2 sites rather than the A1 sites of the tungsten bronze structure. The percentages of vacancies in the A1 sites and A2 sites are no longer the same. With the increase of Ba, the vacancies in the A1 site

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17

Хуболов, Борис Магометович. "ELECTRIC CRYSTALLIZATION OF THIN FILMS OF SODIUM - TUNGSTEN BRONZE." Physical and Chemical Aspects of the Study of Clusters, Nanostructures and Nanomaterials, no. 12() (December 15, 2020): 213–21. http://dx.doi.org/10.26456/pcascnn/2020.12.213.

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В работе рассмотрены вопросы получения тонких пленок натрийвольфрамовых бронз кубической структуры методом электрокристаллизации. Приведены основные параметры полученных пленок. Сняты спектры отражения пленок для неокрашенных и окрашенных пленок. Исследование приповерхностного слоя монокристаллов натрий-вольфрамовых бронз методами протонографии и ядерных реакций показало их высокое структурное совершенство. Анодная и катодная поляризации монокристаллов приводят к изменению структуры их приповерхностного слоя. Обеднение по натрию приповерхностного слоя присутствует и при катодной и при анодной

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18

Jia, Shuangfeng, Hongqian Sang, Wenjing Zhang, et al. "Ordered and twinned structure in hexagonal-based potassium tungsten bronze nanosheets." Journal of Applied Crystallography 46, no. 6 (2013): 1817–22. http://dx.doi.org/10.1107/s0021889813026216.

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Non-stoichiometric hexagonal-based potassium tungsten bronze (KxWO3) nanosheets were synthesized by oxidizing tungsten foil in potassium hydroxide. The tungsten bronze nanosheets exhibited an ordered monoclinic superstructure as revealed by X-ray diffraction patterns. Further detailed structural investigation by employing electron microscopy techniques showed the coexistence of 120° rotation twinning variants in the superstructure phase, which may result from the rotation symmetry reduction induced by the ordered arrangements of K vacancies during crystal growth.

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19

Bursill, L. A., and Peng JuLin. "HREM study of ferroelectric materials." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (1990): 606–7. http://dx.doi.org/10.1017/s0424820100176162.

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High-resolution imaging of ferroelectric materials poses unusual problems, since specimens tend to be mechanically unstable in the electron beam due to electrostatic interactions. It is often difficult to correct specimen induced astigmatism. Despite this situation significant new information has been obtained concerning the atomic structure and configurations of lattice defects, domain walls and commensurate/incommensurate as well as normal crystallographic structural phase transitions. Our studies have concerned a wide range of ferroelectric materials, such as the perovskite-type structures

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20

Zorzi, Janete E., Cintia L. G. de Amorim, Raquel Milani, Carlos A. Figueroa, J. A. H. da Jornada, and Claudio A. Perottoni. "Ball milling-induced pyrochlore-to-tungsten bronze phase transition in RbNbWO6." Journal of Materials Research 24, no. 6 (2009): 2035–41. http://dx.doi.org/10.1557/jmr.2009.0247.

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A set of Bragg peaks consistent with a hexagonal Bravais lattice was observed in the x-ray powder diffraction pattern of cubic pyrochlore rubidium tungstoniobate (RbNbWO6) subjected to high-energy ball milling. The calculated lattice parameters for this hexagonal phase are similar to those of compounds with tungsten bronze structure. In fact, the powder pattern of the hexagonal phase could be refined with a structural model based on the tungsten bronze structure. The hexagonal phase produced by high-energy ball milling of RbNbWO6 transforms back to the pyrochlore structure upon heating to 773

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21

Zivkovic, Olivera, Chao Yan, and Michael J. Wagner. "Tetragonal alkali metal tungsten bronze and hexagonal tungstate nanorods synthesized by alkalide reduction." Journal of Materials Chemistry 19, no. 33 (2009): 6029. http://dx.doi.org/10.1039/b906888k.

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22

Dey, Sonal, Sean T. Anderson, Robert A. Mayanovic, et al. "Experimental and theoretical investigation of a mesoporous KxWO3 material having superior mechanical strength." Nanoscale 8, no. 5 (2016): 2937–43. http://dx.doi.org/10.1039/c5nr07941a.

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23

LI LI-MAN and WANG GANG. "GROWTH OF TUNGSTEN BRONZE CRYSTALS." Acta Physica Sinica 38, no. 5 (1989): 846. http://dx.doi.org/10.7498/aps.38.846.

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24

Neurgaonkar, R. R., J. R. Oliver, W. K. Cory, L. E. Cross, and D. Viehland. "Piezoelectricity in tungsten bronze crystals." Ferroelectrics 160, no. 1 (1994): 265–76. http://dx.doi.org/10.1080/00150199408222463.

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25

Leclaire, A., A. Benabbas, M. M. Borel, A. Grandin, and B. Raveau. "A niobium phosphate bronze closely related to the ITB tungsten bronzes: K7Nb14+xP9−xO60 (x = 0.13)." Journal of Solid State Chemistry 83, no. 2 (1989): 245–54. http://dx.doi.org/10.1016/0022-4596(89)90174-6.

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26

Skopenko, Viktor V., Vladislav V. Lisnyak, Nataliya V. Stus, and Nikolay S. Slobodyanik. "Phosphate tungsten bronzes." Russian Chemical Reviews 73, no. 8 (2004): 753–70. http://dx.doi.org/10.1070/rc2004v073n08abeh000898.

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27

RAVEAU, B., M. M. BOREL, A. LECLAIRE, and A. GRANDIN. "NIOBIUM PHOSPHATE BRONZES — STRUCTURAL RELATIONSHIPS WITH PURE OCTAHEDRAL OXYGEN TUNGSTEN BRONZES." International Journal of Modern Physics B 07, no. 23n24 (1993): 4109–43. http://dx.doi.org/10.1142/s0217979293003590.

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The phosphate niobium bronzes form a large family of structures characterized by pentagonal or hexagonal tunnels. The host lattices of these oxides, involving a mixed valency of niobium Nb(V)-Nb(IV) are described here. The close relationships with pure octahedral structures, mainly perovskites, hexagonal tungsten bronzes (HTB) and tetragonal tungsten bronzes (TTB), and K 3 Nb 8 O 21 are studied.

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28

Fu, Xiao Ming. "Submicron Tungsten Carbide Powder Prepared with Ammonium Tungsten Bronze." Applied Mechanics and Materials 320 (May 2013): 255–58. http://dx.doi.org/10.4028/www.scientific.net/amm.320.255.

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Submicron tungsten carbide (WC) powder is obtained with ammonium tungsten bronze (ATB). The samples are characterized by laser particle size analyzer and scanning electron microscope (SEM). The analysis confirms that submicron tungsten powder is obtained with ATB through the deoxidation process in the hydrogen gas (Rate of purity: 99.99 %, dew point: -40 °C). And then submicron tungsten powder is carbonized in the hydrogen gas. The volume percent content of submicron WC powder between 0 μm and 1 μm is 83.7 %. Therefore, ATB is advantageous to prepare submicron WC powder via the conventional de

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29

Xi, Yongjie, Zhangxian Chen, Vincent Gan Wei Kiat, Liang Huang, and Hansong Cheng. "On the mechanism of catalytic hydrogenation of thiophene on hydrogen tungsten bronze." Physical Chemistry Chemical Physics 17, no. 15 (2015): 9698–705. http://dx.doi.org/10.1039/c4cp05298f.

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30

Huang, Xie-Jun, Jun Bao, Yue Han, et al. "Controllable synthesis and evolution mechanism of tungsten bronze nanocrystals with excellent optical performance for energy-saving glass." Journal of Materials Chemistry C 6, no. 29 (2018): 7783–89. http://dx.doi.org/10.1039/c8tc02740d.

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31

Zellmer, Lauren, Deane K. Smith, and Barry E. Scheetz. "Synthesis and Cell Refinement of Ba5 LiTiNb9 O30 and Ba2 Na3 GdNb10 O30 Ferroelectrics." Powder Diffraction 1, no. 4 (1986): 325–27. http://dx.doi.org/10.1017/s0885715600012008.

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32

Krumeich, F., G. Liedtke, and W. Mader. "A novel intergrowth structure between ReO3-type and tetragonal tungsten bronze-type in the Zr/Nb/W/O system." Acta Crystallographica Section B Structural Science 52, no. 6 (1996): 917–22. http://dx.doi.org/10.1107/s0108768196006891.

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The intergrowth structure of a zirconium niobium tungsten oxide has been determined by transmission electron microscopy methods. Electron diffraction patterns reveal the parameters of the monoclinic lattice: a = 19.0, b = 3.9 and c = 13.8 Å; β = 93.5°. Additional reflections in higher-order Laue zones indicate the presence of a diagonal glide plane, leading to a larger unit cell. A structure model of composition Zr n Nb8−2n W12+n O56 (0.5 < n < 1) has been derived from high-resolution lattice images. Alternating slabs of ReO3-type and of tetragonal tungsten bronze structure are intergrow

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33

Drathen, Christina, Takeshi Nakagawa, Wilson A. Crichton, Adrian H. Hill, Yasuo Ohishi, and Serena Margadonna. "Structural transition in KMnCrF6 – a chemically ordered magnetic ferroelectric." Journal of Materials Chemistry C 3, no. 17 (2015): 4321–32. http://dx.doi.org/10.1039/c4tc02038c.

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34

Olsen, Gerhard Henning, Sverre Magnus Selbach, and Tor Grande. "On the energetics of cation ordering in tungsten-bronze-type oxides." Phys. Chem. Chem. Phys. 17, no. 45 (2015): 30343–51. http://dx.doi.org/10.1039/c5cp05119c.

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35

FOURY, P., and J. P. POUGET. "CHARGE DENSITY WAVE TRANSITIONS IN TWO-DIMENSIONAL TRANSITION METAL BRONZES AND OXIDES." International Journal of Modern Physics B 07, no. 23n24 (1993): 3973–4003. http://dx.doi.org/10.1142/s0217979293003565.

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The structural instabilities towards the formation of a charge density wave (CDW) ground state exhibited by several layered Mo and W bronzes and oxides are reviewed. It is shown that in these two-dimensional (2D) metals, including the purple bronzes A x Mo 6 O 17 (A=K, Na, Tl; x≈1), the γ and η phases of MO 4 O 11 and the monophosphate tungsten bronzes with pentagonal tunnels ( PO 2)4 ( WO 3)2m(m=4, 6, 7), the CDW instability can be associated with particular chains of MoO 6 or WO 6 octahedra of the ReO 3 type slabs along which there is a strong overlap of the t 2g orbitals. The CDW critical w

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36

Han, Hyeon-Dong, Maxim Avdeev, and Young-Il Kim. "Li+ conductivity of tungsten bronze LixSr1−0.5xTa2O6 studied by neutron diffraction analysis." RSC Advances 8, no. 30 (2018): 16521–26. http://dx.doi.org/10.1039/c8ra02779j.

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37

Whittle, Thomas A., William R. Brant, Ray L. Withers, Yun Liu, Christopher J. Howard, and Siegbert Schmid. "Novel insight into the structure and properties of lead-free dielectric Sr3TiNb4O15." Journal of Materials Chemistry C 6, no. 33 (2018): 8890–96. http://dx.doi.org/10.1039/c8tc00732b.

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38

Liang, Xiao, Chongshen Guo, Mei Chen, et al. "A roll-to-roll process for multi-responsive soft-matter composite films containing CsxWO3 nanorods for energy-efficient smart window applications." Nanoscale Horiz. 2, no. 6 (2017): 319–25. http://dx.doi.org/10.1039/c7nh00105c.

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39

LI LI-MAN and WANG GANG. "PHYSICAL INVESTIGATION ON TUNGSTEN BRONZE CRYSTALS." Acta Physica Sinica 38, no. 5 (1989): 849. http://dx.doi.org/10.7498/aps.38.849.

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40

Stennett, M. C., I. M. Reaney, G. C. Miles, A. R. West, and C. A. Kirk. "Tungsten Bronze-Structured Temperature-Stable Dielectrics." Journal of the American Ceramic Society 90, no. 3 (2007): 980–82. http://dx.doi.org/10.1111/j.1551-2916.2007.01487.x.

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41

Bhanumathi, A., S. Narayana Murty, K. Umakantham, et al. "Ferroelectric properties of tungsten bronze ceramics." Ferroelectrics 102, no. 1 (1990): 173–81. http://dx.doi.org/10.1080/00150199008221476.

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42

Adachi, Masatoshi, Akira Kawabata, and Fumio Takeda. "Preparation of Tungsten-Bronze Thin Films." Japanese Journal of Applied Physics 30, Part 1, No. 9B (1991): 2208–11. http://dx.doi.org/10.1143/jjap.30.2208.

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43

Parida, B. N., Piyush R. Das, R. Padhee, and R. N. P. Choudhary. "Phase transition in tungsten–bronze Li2Pb2Nd2W2Ti4Nb4O30ferroelectric." Phase Transitions 86, no. 8 (2013): 778–95. http://dx.doi.org/10.1080/01411594.2012.717942.

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44

Neurgaonkar, Ratnakar R., and Warren K. Cory. "Progress in photorefractive tungsten bronze crystals." Journal of the Optical Society of America B 3, no. 2 (1986): 274. http://dx.doi.org/10.1364/josab.3.000274.

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45

Dobson, J. V., and J. Comer. "The sodium responsive tungsten bronze electrode." Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 220, no. 2 (1987): 225–34. http://dx.doi.org/10.1016/0022-0728(87)85110-0.

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46

Baucke, F. G. K., J. A. Duffy, and P. R. Woodruff. "Optical properties of tungsten bronze surfaces." Thin Solid Films 148, no. 2 (1987): L59—L61. http://dx.doi.org/10.1016/0040-6090(87)90161-1.

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47

Zhang, Xinzhong, Wenbo Ye, Xingying Bu, et al. "Remarkable capacitive performance in novel tungsten bronze ceramics." Dalton Transactions 50, no. 1 (2021): 124–30. http://dx.doi.org/10.1039/d0dt03511d.

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48

Chen, X. M., Z. Y. Xu, and J. Li. "Dielectric ceramics in the BaO–Sm2O3–TiO2–Ta2O5 quaternary system." Journal of Materials Research 15, no. 1 (2000): 125–29. http://dx.doi.org/10.1557/jmr.2000.0021.

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Abstract:

Dielectric ceramics in the BaO–Sm2O3–TiO2–Ta2O5 quaternary system were prepared and characterized for five typical compositions: BaSm5Ti7Ta3O30, Ba2Sm4Ti6Ta4O30, Ba3Sm3Ti5Ta5O30, Ba4Sm2Ti4Ta6O30, and Ba5SmTi3Ta7O30. The latter three compositions tended to form the tungsten–bronze phase, and the ceramics based on these compositions had a high dielectric constant (134–175) and a low dielectric loss (on the order of 10−3) but a larger temperature coefficient of the dielectric constant. Meanwhile, the former two compositions generally had a more complex phase constitution, containing the tungsten–

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49

Xu, Qiang, Jing Xiao Liu, Fei Shi, Jia Yu Luo, Yan Yan Jiang, and Gui Shan Liu. "Effects of Annealing in Different Atmosphere on the Near-Infrared Shielding Properties of Cs_xWO₃ Particles." Advanced Materials Research 712-715 (June 2013): 284–87. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.284.

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Using sodium tungstate and cesium carbonate as raw materials, cesium tungsten bronze (CsxWO3) powders were synthesized by low temperature hydrothermal reaction with citric acid as the reducing agent. Effects of annealing in different atmosphere on the near-infrared shielding properties of CsxWO3were investigated. The microstructure of CsxWO3powders was characterized by X-ray diffraction. The CsxWO3films were prepared on glass using polyvinyl alcohol solution as film-forming agent, and the optical transmission properties of CsxWO3films were investigated. The results indicate that the near-infra

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50

Song, Yilong, Fang Zhao, Zhizun Li, Zhaogang Cheng, and Hongjing Wan. "Electrospinning preparation and near-infrared absorption properties of a silica/cesium tungsten bronze micro–nano fiber membrane." RSC Advances 11, no. 49 (2021): 31084–89. http://dx.doi.org/10.1039/d1ra06157g.

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