Magnetic phase diagram of HoMnO3

被引:51
作者
Fiebig, M [1 ]
Degenhardt, C
Pisarev, RV
机构
[1] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany
[2] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia
关键词
D O I
10.1063/1.1450837
中图分类号
O59 [应用物理学];
学科分类号
摘要
The phase diagram of hexagonal HoMnO3 in the magnetic-field/temperature plane is investigated by second harmonic generation (SHG). Four different magnetic phases of the frustrated Mn sublattice are identified on the basis of the selection rules for SHG. In-plane or interplane reordering of Mn spins at the phase boundaries occurs almost independent of each other which leads to a tetracritical point in the phase diagram. Interactions of the Mn and Ho sublattices are discussed as possible origin of the phase transitions. (C) 2002 American Institute of Physics.
引用
收藏
页码:8867 / 8869
页数:3
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