Systematic study on crystal structures in tetragonal RB2C2 (R=rare earth) compounds

被引：36

作者：

Ohoyama, K ^{[1
]}

Kaneko, K ^{[1
]}

Indoh, K ^{[1
]}

Yamauchi, H ^{[1
]}

Tobo, A ^{[1
]}

Onodera, H ^{[1
]}

Yamaguchi, Y ^{[1
]}

机构：

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

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2001年 / 70卷 / 11期

关键词：

RB2C2; crystal structure; neutron powder diffraction; tetragonal; antiferroquadrupolar ordering;

D O I：

10.1143/JPSJ.70.3291

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Detailed crystal structures of the tetragonal RB2C2 (R=La, Ce, Pr, Nd, Tb, Dy, Ho, Er, Tm and Lu) compounds which include the antiferroquadrupolar ordering materials, DyB2C2 and HoB2C2, have been investigated by neutron powder diffraction technique. RB2C2 are crystallised in the same LaB2C2 type crystal structure with P4/mbm symmetry. The structure of the B-C network which consists of non-regular squares and octagons are nearly the same in the system except slight rotation as rare earth atoms become heavier.

引用

页码：3291 / 3295

页数：5

共 16 条

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