Synthesis and properties of Sr2CoMoO6 and Sr2NiMoO6

被引：19

作者：

Gagulin, VV ^{[1
]}

Korchagina, SK ^{[1
]}

Ivanova, VV ^{[1
]}

Shevchuk, YA ^{[1
]}

机构：

[1] LY Karpov Phys Chem Res Inst, Russian State Sci Ctr, Moscow 105064, Russia

来源：

INORGANIC MATERIALS | 2003年 / 39卷 / 06期

关键词：

Microwave; Phase Transition; Inorganic Chemistry; Perovskite; Dielectric Property;

D O I：

10.1023/A:1024061506053

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Sr2CoMoO6 and Sr2NiMoO6 ceramics are prepared by solid-state reactions in air. As shown by xray diffraction, both compounds have a tetragonal perovskite-like structure with doubled unit-cell parameters as compared to the perovskite cell: a = 7.850 Angstrom, c = 7.932 Angstrom in Sr2CoMoO6 and a = 7.818 Angstrom, c = 7.833 Angstrom in Sr2NiMoO6. The c/a ratio in both compounds is 1.01. The dielectric properties of Sr2CoMoO6 and Sr2NiMoO6 are studied at low frequencies (1 kHz) and in the microwave range (1 GHz). The conductivity of both compounds exhibits semiconducting behavior. In the microwave range, their temperature-dependent dielectric permittivities show peaks attributable to phase transitions. Both Sr2CoMoO6 and Sr2NiMoO6 are assumed to be magnetoelectric materials.

引用

页码：625 / 626

页数：2