High-pressure synthesis, crystal structures, and characterization of CdVO3-δ and solid solutions CdVO3-NaVO3

被引：12

作者：

Belik, AA

Takayama-Muromachi, E

机构：

[1] NIMS, ICYS, Tsukuba, Ibaraki 3050044, Japan

[2] NIMS, AML, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2006年 / 179卷 / 06期

关键词：

high-pressure synthesis; GdFeO3; perovskite; resistivity; magnetic susceptibility; specific heat; crystal structures;

D O I：

10.1016/j.jssc.2006.02.018

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

CdVO3-delta and solid solutions of Cd1-xNaxVO3 With the GdFeO3-type perovskite structure were prepared using a high-pressure (6 GPa) and high-temperature technique. No significant oxygen and cation deficiency was found in CdVO3. Cd1-xNaxVO3 are formed in the compositional range of 0 <= x <= 0.2. CdVO3 and Cd1-xNaxVO3 demonstrate metallic conductivity and Pauli paramagnetism between 2 and 300 K. A large electronic contribution to the specific heat (gamma = 13.4 and 11.2 mJ/(mol K-2) for CdVO3 and Cd0.8Na0.2VO3, respectively) was observed at low temperatures due to the strongly correlated electrons. Crystal structures of CdVO3 and Cd0.8Na0.2VO3 were refined by X-ray powder diffraction: space group Pnma; Z = 4; a = 5.33435(7) angstrom, b = 7.52320(9) angstrom, and c = 5.26394(6) angstrom for CdVO3 and a = 5.32056(9) angstrom, b = 7.50289(13) angstrom, and c = 5.25902(8) angstrom for Cd0.8Na0.2VO3. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：1650 / 1658

页数：9

共 28 条

[21] Electronic structure of Y1-xCaxVO3 studied by high-energy spectroscopies [J].