Terahertz probes of magnetic field induced spin reorientation in YFeO3 single crystal

被引：38

作者：

Lin, Xian ^{[1
]}

Jiang, Junjie ^{[1
]}

Jin, Zuanming ^{[1
,2
]}

Wang, Dongyang ^{[3
,4
]}

Tian, Zhen ^{[3
,4
]}

Han, Jiaguang ^{[3
,4
]}

Cheng, Zhenxiang ^{[1
,5
]}

Ma, Guohong ^{[1
]}

机构：

[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China

[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

[3] Tianjin Univ, Ctr Terahertz Waves, Tianjin 300072, Peoples R China

[4] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Minist Educ, Key Lab Optoelect Informat & Technol, Tianjin 300072, Peoples R China

[5] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

来源：

APPLIED PHYSICS LETTERS | 2015年 / 106卷 / 09期

基金：

中国国家自然科学基金;

关键词：

WEAK FERROMAGNETISM; ANTIFERROMAGNETS; MANIPULATION; MOSSBAUER; YBFEO3; ORDER;

D O I：

10.1063/1.4913998

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using the terahertz time-domain spectroscopy, we demonstrate the spin reorientation of a canted antiferromagnetic YFeO3 single crystal, by evaluating the temperature and magnetic field dependence of resonant frequency and amplitude for the quasi-ferromagnetic (FM) and quasi-antiferromagnetic modes (AFM), a deeper insight into the dynamics of spin reorientation in rare-earth orthoferrites is established. Due to the absence of 4f-electrons in Y ion, the spin reorientation of Fe sublattices can only be induced by the applied magnetic field, rather than temperature. In agreement with the theoretical predication, the frequency of FM mode decreases with magnetic field. In addition, an obvious step of spin reorientation phase transition occurs with a relatively large applied magnetic field of 4 T. By comparison with the family members of RFeO3 (R = Y3+ or rare-earth ions), our results suggest that the chosen of R would tailor the dynamical rotation properties of Fe ions, leading to the designable spin switching in the orthoferrite antiferromagnetic systems. (C) 2015 AIP Publishing LLC.

引用

页数：4

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