Structural change at metal-insulator transition of Tb2Ba2Co4O11

被引：62

作者：

Kusuya, H ^{[1
]}

Machida, A

Moritomo, Y

Kato, K

Nishibori, E

Takata, M

Sakata, M

Nakamura, A

机构：

[1] Nagoya Univ, Dept Crystalline Mat Sci, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, CIRSE, Nagoya, Aichi 4648601, Japan

[3] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2001年 / 70卷 / 12期

关键词：

metal-insulator transition; double-perovskite structure;

D O I：

10.1143/JPSJ.70.3577

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Temperature variation of the crystal structure has been investigated for Tb2Ba2Co4O11, which a metal-insulator (XII) transition at T-MI = 340 K. The compound has a layered-type double-perovskite structure along the c-axis, with alternating the CoO6 octahedron and the CoO5 pyramids along the a-axis. With decrease of temperature below T-MI, the distortion of the octahedral and pyramidal sites is fairly released, suggesting that spin state transition of the Co3+ ions is the origin for the MI transition.

引用

页码：3577 / 3580

页数：4

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