Thermal and electrical properties of Ca5Mg4-xZnx(VO4)(6) (0 = x = 4)

Tolkacheva Anna S.; Shkerin Sergey N.; Zemlyanoi Kirill G.Reznitskikh Olga G.Pershina Svetlana V.Khavlyuk Pavel D.

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Thermal and electrical properties of Ca5Mg4-xZnx(VO4)(6) (0 = x = 4)

机译：Thermal and electrical properties of Ca5Mg4-xZnx(VO4)(6) (0 = x = 4)

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Calcium vanadates Ca5Mg4-xZnx(VO4)(6) (0 <= x <= 4) have been studied for the first time using a set of high-temperature methods of analysis. The onset of melting process determined from differential scanning calorimetry decreases from 1158 to 881 degrees C (+/- 1.5 degrees C) with increasing of x (dopant's content). CTE temperature dependence is found to show a hysteresis. Electrical transport properties measured by impedance spectroscopy in air of different humidity are also discussed. The value of electrical conductivity does not depend on air humidity. It is found to equal to 1.5 x 10(-6) Scm(-1) at 720 degrees C for Ca5Mg4(VO4)(6) which is specific for garnet-related crystals.

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《Journal of thermal analysis and calorimetry》 |2019年第3期|1003-1009|共7页
作者
Tolkacheva Anna S.; Shkerin Sergey N.; Zemlyanoi Kirill G.Reznitskikh Olga G.Pershina Svetlana V.Khavlyuk Pavel D.;
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作者单位

Russian Acad Sci, Ural Branch, Inst High Temp Electrochem, 20 Akad Skaya, Ekaterinburg 620137, Russia;

Russian Acad Sci, Ural Branch, Inst Solid State Chem, Ekaterinburg 620990, Russia;

INMT Ural Fed Univ, Ekaterinburg 620002, Russia;

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正文语种英语
中图分类物理化学（理论化学）、化学物理学;
关键词
Non-stoichiometric garnet; Electrical conductivity; DSC; Thermal expansion;

Thermal and electrical properties of Ca5Mg4-xZnx(VO4)(6) (0 = x = 4)

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