Pressure-induced structural phase transition in the two-dimensional Heisenberg ferromagnet K2CuF4

被引：22

作者：

Ishizuka, M ^{[1
]}

Terai, M

Hidaka, M

Endo, S

Yamada, I

Shimomura, O

机构：

[1] Osaka Univ, Res Ctr Mat Sci Extreme Condit, Osaka 560, Japan

[2] Kyushu Univ, Fac Sci, Dept Phys, Fukuoka 812, Japan

[3] Chiba Univ, Fac Sci, Dept Phys, Chiba 263, Japan

[4] Natl Lab High Energy Phys, Photon Factory, Ibaraki, Osaka 305, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.57.64

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recent magnetic-susceptibility measurements revealed a drastic change of the magnetism in K2CuF4 at about 8-9 GPa. We have made high-pressure powder x-ray-diffraction experiments of K2CuF4 up to 14 GPa at room temperature so as to study the correlation between the structure and magnetism. A structural phase transition was observed at around 9.5 GPa from the orthorhombic symmetry D-2h(18)-Bbcm to D(2h)19-Ammm. It is therefore. suggested that a ferromagnetic-to-antiferromagnetic phase transition is induced by the rearrangement of the CuF6 octahedra in the high-pressure phase.

引用

页码：64 / 67

页数：4

共 6 条

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