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：
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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.
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页码：256 / 259
页数：4
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