Field-Induced Magnetic Phase Transitions and Rich Phase Diagram of HoMnO3 Single Crystal
Field-Induced Magnetic Phase Transitions and Rich Phase Diagram of HoMnO3 Single Crystal
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HoMnO3 单晶的场致磁相变和丰富的相图
DOI：
10.3390/cryst9080419
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发表时间：
2019-08-01
期刊：
影响因子：
2.7
通讯作者：
Wang, Junfeng
中科院分区：
文献类型：
--
作者：
Dong, Chao;Chen, Rui;Wang, Junfeng
在高达62 T的脉冲磁场和温度下降到~0.7 K的广泛的磁化研究已经进行了单晶的六方晶系锰氧化物HoMnO 3。对于沿c轴沿着施加的磁场（H），在10 T以下观察到连续的磁转变，在~41 T观察到阶梯状的磁转变。H//c的相图非常复杂，在6 K以下探索了新的相界。此相图与早期的结果来自介电常数和中子散射测量。对于H//a，在3 T以下发现了两个磁转变，并首次给出了相图。讨论了场致磁相的磁对称性的变化。
An extensive magnetization study in pulsed fields up to 62 T and at temperatures down to ~0.7 K has been performed on the single crystals of hexagonal manganite HoMnO3. For magnetic fields (H) applied along the c-axis, successive magnetic transitions below 10 T and a step-like transition at ~41 T are observed. The phase diagram for H//c is very complex and new phase boundaries are explored below 6 K. This phase diagram is compared with the early results derived from dielectric constant and neutron scattering measurements. For H//a, two magnetic transitions are found below 3 T dome-shaped and the phase diagram is reported for the first time. The variety of magnetic symmetries of the field-induced magnetic phases is discussed.