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

被引：3
|
作者：
Tolkacheva, Anna S. [1 ,2 ]
Shkerin, Sergey N. [1 ]
Zemlyanoi, Kirill G. [2 ]
Reznitskikh, Olga G. [3 ,4 ]
Pershina, Svetlana V. [1 ]
Khavlyuk, Pavel D. [2 ]
机构：
[1] Russian Acad Sci, Ural Branch, Inst High Temp Electrochem, 20 Akad Skaya, Ekaterinburg 620137, Russia
[2] INMT Ural Fed Univ, Ekaterinburg 620002, Russia
[3] Russian Acad Sci, Ural Branch, Inst Solid State Chem, Ekaterinburg 620990, Russia
[4] Inenergy Llc, Second Kotlyakovskiy Lane 18, Moscow 115201, Russia
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2019年 / 136卷 / 03期
关键词：
Non-stoichiometric garnet; Electrical conductivity; DSC; Thermal expansion; MICROWAVE DIELECTRIC-PROPERTIES;
D O I：
10.1007/s10973-018-7780-z
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
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.
引用
收藏
页码：1003 / 1009
页数：7
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