Magnetic and neutron diffraction study on iridium(IV) perovskites Sr2LnIrO6 (Ln = Ce, Tb)

被引：18

作者：

Harada, D ^{[1
]}

Wakeshima, M

Hinatsu, Y

Ohoyama, K

Yamaguchi, Y

机构：

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

[2] Tohoku Univ, Mat Res Inst, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2000年 / 12卷 / 14期

关键词：

D O I：

10.1088/0953-8984/12/14/302

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Powder neutron diffraction measurements have been performed for two tetravalent iridium perovskites, Sr2CeIrO6 (T-N = 21 K) and Sr2TbIrO6 (T-N = 51 K). It is found that moments of Tb4+ in these ordered perovskites are stacked antiferromagnetically along the c-axis, and the magnetic structure is of type I. The ordered magnetic moment of Tb4+ is 4.96 mu(B) at 28 K and 6.60 mu(B) at 2 K. From magnetic susceptibility measurements on Sr2CexTb1-xIrO6, the antiferromagnetic transition temperatures decrease greatly with decreasing Tb4+ ion, which indicates that the pathway of such interactions must involve the Tb4+ ions.

引用

页码：3229 / 3239

页数：11

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