Influence of the Jahn–Teller distortion on magnetic ordering in TbMn1-xFexO3

doi:10.1088/1674-1056/21/10/107501

中国物理B ›› 2012, Vol. 21 ›› Issue (10): 107501-107501.doi: 10.1088/1674-1056/21/10/107501

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Influence of the Jahn–Teller distortion on magnetic ordering in TbMn_1-xFe_xO₃

靳金玲, 张向群, 李国科, 成昭华

State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2012-05-17 修回日期:2012-06-04 出版日期:2012-09-01 发布日期:2012-09-01
基金资助:
Project supported by the National Basic Research Program of China (Grant Nos. 2010CB934202 and 2011CB921801) and the National Natural Sciences Foundation of China (Grant Nos. 11174351, 50931006, 51021061, and 11034004).

Influence of the Jahn–Teller distortion on magnetic ordering in TbMn_1-xFe_xO₃

Jin Jin-Ling (靳金玲), Zhang Xiang-Qun (张向群), Li Guo-Ke (李国科), Cheng Zhao-Hua (成昭华)

State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Received:2012-05-17 Revised:2012-06-04 Online:2012-09-01 Published:2012-09-01
Contact: Cheng Zhao-Hua E-mail:zhcheng@aphy.iphy.ac.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant Nos. 2010CB934202 and 2011CB921801) and the National Natural Sciences Foundation of China (Grant Nos. 11174351, 50931006, 51021061, and 11034004).

摘要/Abstract

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 TbMn_1-xFe_xO₃ (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: quadruple splitting, Jahn-Teller distortion, spiral magnetic ordering

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 TbMn_1-xFe_xO₃ (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.

Key words: quadruple splitting, Jahn-Teller distortion, spiral magnetic ordering

中图分类号: (Spin-density waves)

75.30.Fv

71.70.Ej (Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect) 77.84.Bw (Elements, oxides, nitrides, borides, carbides, chalcogenides, etc.)

靳金玲, 张向群, 李国科, 成昭华. Influence of the Jahn–Teller distortion on magnetic ordering in TbMn_1-xFe_xO₃[J]. 中国物理B, 2012, 21(10): 107501-107501.

Jin Jin-Ling (靳金玲), Zhang Xiang-Qun (张向群), Li Guo-Ke (李国科), Cheng Zhao-Hua (成昭华). Influence of the Jahn–Teller distortion on magnetic ordering in TbMn_1-xFe_xO₃[J]. Chin. Phys. B, 2012, 21(10): 107501-107501.

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Influence of the Jahn–Teller distortion on magnetic ordering in TbMn_1-xFe_xO₃

Influence of the Jahn–Teller distortion on magnetic ordering in TbMn_1-xFe_xO₃

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