Field-induced metamagnetic transitions in S=3/2 Heisenberg antiferromagnets MCr2O4

被引：0

作者：

Ueda, H ^{[1
]}

Mitamura, H ^{[1
]}

Goto, T ^{[1
]}

Ueda, Y ^{[1
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

来源：

PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT | 2005年 / 159期

关键词：

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetic properties of chromium spinels MCr2O4 (M = Zn, Mg, Cd and Hg) were studied. By increasing the size of A-site cation, spin frustration is gradually relieved due to the enhancement of spin-lattice couplings. We found interesting behavior for CdCr2O4 and HgCr2O4 in their magnetization process. They exhibit first order transition to magnetization plateau phase with one half of full moment of S = 3/2 Cr3+ at 28 T and 10 T for CdCr2O4 and HgCr2O4, respectively. These magnetization plateaux are attributed to formation of three-up and one-down collinear spin arrangement. For HgCr2O4 we observed another transition to ferromagnetic state.

引用

页码：256 / 259

页数：4

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