| 钙钛矿结构RFeO3晶体的磁化跃迁效应研究进展 |
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| 引用本文： | 贲鑫伟,高湉,翟浩天,郑旭.钙钛矿结构RFeO3晶体的磁化跃迁效应研究进展[J].人工晶体学报,2021,50(8):1575-1582. |
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| 作者姓名： | 贲鑫伟 高湉 翟浩天 郑旭 |
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| 作者单位： | 上海电力大学数理学院,上海 201306 |
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| 摘 要： | 钙钛矿稀土正铁氧体RFeO3具有丰富的磁性,这主要源于4f电子层的稀土离子和3d电子层的铁离子之间复杂的相互作用。磁化跃迁作为RFeO3体系中的重要现象,是指体系中的稀土离子磁矩和铁离子磁矩在特定的磁场和温度下发生180°旋转,宏观表现为磁热曲线中磁化强度发生断崖式变化。本文综述了不同化合物RFeO3的两种磁化跃迁现象,第一类磁化跃迁通常具有补偿点,FR与FFe的排列耦合方向不变,第二类磁化跃迁则相反,且两类磁化跃迁出现的温区受外加磁场的调控。
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| 关 键 词： | 稀土正铁氧体 磁化跃迁 磁各向异性 自旋重取向 |
| 收稿时间： | 2021-03-02 |
Research Progress on Magnetization Jump Effect of Perovskite RFeO3 Crystals |
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| BEN Xinwei,GAO Tian,ZHAI Haotian,ZHENG Xu.Research Progress on Magnetization Jump Effect of Perovskite RFeO3 Crystals[J].Journal of Synthetic Crystals,2021,50(8):1575-1582. |
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| Authors: | BEN Xinwei GAO Tian ZHAI Haotian ZHENG Xu |
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| Affiliation: | Department of Physics, Shanghai University of Electric Power, Shanghai 201306, China |
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| Abstract: | Perovskite rare earth orthoferrites RFeO3 possesses abundant magnetism, which is due to the complex interaction between rare earth ions in 4f electron shell and iron ions in 3d electron shell. As an important phenomenon in RFeO3 system, magnetization jump means that the magnetic moments of rare earth ions and iron ions in the system rotate 180° under a specific temperature and applied magnetic field, and the macroscopic performance is that the magnetization changes abruptly in the magnetocaloric curve. In this paper, two kinds of magnetization jump phenomena of different compounds RFeO3 are discussed, the first type of magnetization transition usually has compensation points, and the coupling direction of FR and FFe is unchanged, while the second type of magnetization transition is opposite, and the temperature region of the two types of magnetization transition is regulated by the external magnetic field. |
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| Keywords: | earth orthoferrite magnetization jump magnetocrystalline anisotropy spin reorientation |
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