The structure and magnetic properties of new iridium(IV) perovskites Sr2LnIrO6 (Ln = Ce, Tb)

被引：38

作者：

Harada, D ^{[1
]}

Wakeshima, M ^{[1
]}

Hinatsu, Y ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Sci, Div Chem, Sapporo, Hokkaido 0600810, Japan

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1999年 / 145卷 / 01期

关键词：

D O I：

10.1006/jssc.1999.8223

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

New compounds with the formula Sr(2)LnIrO(6) (Ln = Ce, Sm similar to Lu) were characterized from X-ray diffraction measurements and magnetic susceptibility measurements in the temperatures between 5 and 300 K. They were determined to have ordered monoclinic perovskite structures with space group P2(1)/n. The oxidation state of iridium is considered to be pentavalent for Sr(2)LnIrO(6) (Ln = Sm similar to Gd, Dy similar to Lu), whereas it is tetravalent for Sr(2)LnIrO(6) (Ln = Ce, Tb). The compounds in which the iridium is in the tetravalent state show an antiferromagnetic transition. Sr2CeIrO6 has a transition temperature at 21 K, and Sr2TbIrO6 has two transition temperatures at 25 and 51 K. (C) 1999 Academic Press.

引用

页码：356 / 360

页数：5

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