High-pressure synthesis and magnetic properties of layered double perovskites Ln2CuMO6 (Ln = La, Pr, Nd, and Sm;: M = Sn and Zr)

被引：59

作者：

Azuma, M ^{[1
]}

Kaimori, S ^{[1
]}

Takano, M ^{[1
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 611, Japan

来源：

CHEMISTRY OF MATERIALS | 1998年 / 10卷 / 10期

关键词：

D O I：

10.1021/cm980217g

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：

Ln(2)CuSnO(6) (Ln = Pr, Nd, and Sm) and La2CuZrO6 have been stabilized in the same layered double perovskite structure as La2CuSnO6 at high pressures of 6-8 GPa. Their crystal structures and magnetic properties were investigated. Replacement of La3+ by smaller lanthanide ions and Sn4+ by larger Zr4+ increased the buckling of the Cu-O-Cu bonds in the CuO2 layers. In Nd2CuSnO6, both the Cu and Nd sublattice were found to exhibit weak ferromagnetism owing to spin canting. The magnetization data showed an anomalous transition at 110 K.

引用

页码：3124 / 3130

页数：7

共 17 条

[1] LA2CUSNO6 - A NEW PEROVSKITE-RELATED COMPOUND WITH AN UNUSUAL ARRANGEMENT OF B-CATIONS [J].