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| Influence of the Jahn—Teller distortion on magnetic ordering in TbMn1-xFexO3 | |
| 引用本文： | 靳金玲,张向群,李国科,成昭华. Influence of the Jahn—Teller distortion on magnetic ordering in TbMn1-xFexO3[J]. 中国物理 B, 2012, 21(10): 107501-107501. DOI: 10.1088/1674-1056/21/10/107501 |
| 作者姓名： | 靳金玲 张向群 李国科 成昭华 |
| 作者单位： | State Key Laboratory of Magnetism,Institute of Physics,Chinese Academy of Sciences |
| 基金项目： | Project supported by the National Basic Research Program of China （Grant Nos. 2010CB934202 and 2011CB921801）; the National Natural Science Foundation of China （Grant Nos. 11174351,50931006,51021061,and 11034004） |
| 摘 要： | The Jahn-Teller distortion plays an important role in determining the exchange interaction in rare-earth manganites.In this work we study the influence of the Jahn-Teller distortion on the magnetic structures of TbMn1-xFexO3（x = 0,0.02,0.05,0.10,and 0.20） single crystals in the basal MnO2 plane.The decrease in the quadruple splitting with the increasing Fe doping indicates the reduction of the Jahn-Teller distortion,which makes the nearest neighboring（NN） FM interaction dominant over the next nearest neighbor（NNN） AFM interaction.This alteration is favorable for the development of A-type AFM ordering instead of the spiral magnetic ordering,which collapses when x ≥ 0.05.The analysis of dielectric data indicates that the ferroelectricity is arising from the peculiar spiral magnetic ordering. |
| 关 键 词： | Jahn-Teller畸变 磁有序 稀土锰氧化物 原子力显微镜 相互作用 四极分裂 AFM 磁结构 |
| 收稿时间： | 2012-05-17 |
Influence of the Jahn-Teller distortion on magnetic ordering in TbMn1-xFexO3 |
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| Jin Jin-Ling,Zhang Xiang-Qun,Li Guo-Ke,Cheng Zhao-Hua. Influence of the Jahn-Teller distortion on magnetic ordering in TbMn1-xFexO3[J]. Chinese Physics B, 2012, 21(10): 107501-107501. DOI: 10.1088/1674-1056/21/10/107501 | |
| Authors: | Jin Jin-Ling Zhang Xiang-Qun Li Guo-Ke Cheng Zhao-Hua |
| Affiliation: | State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China |
| Abstract: | The Jahn-Teller distortion plays an important role in determining the exchange interaction in rare-earth manganites. In this work we study the influence of the Jahn-Teller distortion on the magnetic structures of TbMn1-xFexO3 (x=0, 0.02, 0.05, 0.10, and 0.20) single crystals in the basal MnO2 plane. The decrease in the quadruple splitting with the increasing Fe doping indicates the reduction of the Jahn-Teller distortion, which makes the nearest neighboring (NN) FM interaction dominant over the next nearest neighbor (NNN) AFM interaction. This alteration is favorable for the development of A-type AFM ordering instead of the spiral magnetic ordering, which collapses when x≥0.05. The analysis of dielectric data indicates that the ferroelectricity is arising from the peculiar spiral magnetic ordering. |
| Keywords: | quadruple splitting Jahn-Teller distortion spiral magnetic ordering |
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