Magnetic structure and local lattice distortion in giant negative thermal expansion material Mn3Cu1-xGexN

被引：4

作者：

Iikubo, S. ^{[1
]}

Kodama, K. ^{[2
]}

Takenaka, K. ^{[3
,4
]}

Takagi, H. ^{[4
,5
]}

Shamoto, S. ^{[2
]}

机构：

[1] Kyushu Inst Technol, Kitakyushu, Fukuoka 8080196, Japan

[2] Japan Atom Energy Agcy, Quantum Beam Sci Directorate, Tokai, Ibaraki 3191195, Japan

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

[4] RIKEN, Wako, Saitama 3510198, Japan

[5] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

来源：

INTERNATIONAL CONFERENCE ON NEUTRON SCATTERING 2009 | 2010年 / 251卷

关键词：

MANGANESE;

D O I：

10.1088/1742-6596/251/1/012014

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Magnetic and local structures in an antiperovskite system, Mn3Cu1-xGexN, with a giant negative thermal expansion have been studied by neutron powder diffraction measurement. We discuss (1) an importance of an averaged cubic crystal structure and a Gamma(5g) antiferromagnetic spin structure for the large magneto-volume effect (MVE) in this itinerant electron system, (2) an unique role of a local lattice distortion well described by the low temperature tetragonal structure of Mn3GeN for the broadening of MVE.

引用

页数：4

共 16 条

[1] TETRAGONAL DISTORTION T(1) AND T(4) IN MANGANESE PEROVSKITE NITRIDES AND CARBIDES [J].