Magnetovolume effect in Mn3Cu1-xGexN related to the magnetic structure:: Neutron powder diffraction measurements

被引：114

作者：

Iikubo, S. ^{[1
]}

Kodama, K. ^{[1
]}

Takenaka, K. ^{[2
,3
]}

Takagi, H. ^{[2
,3
]}

Shamoto, S. ^{[1
]}

机构：

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

[2] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

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

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.77.020409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic structures in an antiperovskite system, Mn3Cu1-xGexN, with a large magnetovolume effect above x=0.15 have been studied by neutron powder diffraction measurement. The present neutron study revealed that not only a cubic crystal structure but also a Gamma(5g) antiferromagnetic spin structure are key ingredients of the large magnetovolume effect in this itinerant electron system. The large magnetovolume effect is possibly ascribed to the geometrical frustration originating from the corner-shared octahedra of the antiperovskite structure.

引用

页数：4

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