Synthesis of new triple molybdates K5RZr(MoO4)6 (R = Al, Cr, Fe, In, Sc) in the K2MoO4-R2(MoO4)3-Zr(MoO4)2 systems, their structure and electrical properties

被引：16
|
作者：
Bazarova, Jibzema G. [1 ]
Logvinova, Alexandra V. [1 ]
Bazarov, Bair G. [1 ]
Tushinova, Yunna L. [1 ]
Dorzhieva, Sesegma G. [1 ]
Temuujin, Jadambaa [2 ]
机构：
[1] Russian Acad Sci, Baikal Inst Nat Management, Siberian Branch, Sakhyanovoy St 6, Ulan Ude 670047, Buryat Republic, Russia
[2] Mongolian Acad Sci, Inst Chem & Chem Technol, Ulaanbaatar 51, Mongolia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 741卷
基金：
俄罗斯基础研究基金会;
关键词：
Synthesis; Triple molybdates; X-ray analysis; DSC; Electrical properties; CRYSTAL-STRUCTURE; ION CONDUCTIVITY; ZIRCONIUM; PHASE; GA;
D O I：
10.1016/j.jallcom.2018.01.208
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Phase relations in the K2MoO4-R-2(MoO4)(3)-Zr(MoO4)(2) (R = Al, Cr, Fe, In, Sc) systems were studied by the method of intersecting cuts. The formation of new molybdates with compositions of K5RZr(MoO4)(6) (R = Al, Cr, Fe, In, Sc) were revealed. Synthesized molybdates crystallized in the hexagonal system, space group P6(3), Z = 2. Their thermal characteristics were determined. The electrical properties of K5RZr(MoO4)(6) (R = Fe, In) were investigated using impedance spectroscopy (25-10(6) Hz) in the temperature range 298-973 K. It was found that the dielectric parameters were temperature dependent and exhibited anomalies at high temperature (700-900 K) due to the phase transition. The electrical resistivity was reduced by 6 orders of magnitude from 10(8) to 10(2) Om.cm. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：834 / 839
页数：6
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