An electron spin resonance study of Eu doping effect in La4/3Sr5/3Mn2O7 single crystal

doi:10.1088/1674-1056/23/7/077601

中国物理B ›› 2014, Vol. 23 ›› Issue (7): 77601-077601.doi: 10.1088/1674-1056/23/7/077601

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

An electron spin resonance study of Eu doping effect in La_4/3Sr_5/3Mn₂O₇ single crystal

何利民^a, 冀钰^a, 吴鸿业^a, 徐宝^a, 孙运斌^a, 张雪峰^b, 鲁毅^a, 赵建军^a

a Department of Physics, Baotou Normal University, Baotou 014030, China;
b Inner Mongolia Key Laboratory for Utilization of Bayan Obo Multi-Metallic Resources, and Elected State Key Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China

收稿日期:2013-11-15 修回日期:2014-03-18 出版日期:2014-07-15 发布日期:2014-07-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11164019 and 11064008) and the Inner Mongolia Natural Science Foundation, China (Grant Nos. NJZZ11166, NJZY10163, NJZY12202, 2011MS0101, 2011MS0108, and 2009MS0101).

An electron spin resonance study of Eu doping effect in La_4/3Sr_5/3Mn₂O₇ single crystal

He Li-Min (何利民)^a, Ji Yu (冀钰)^a, Wu Hong-Ye (吴鸿业)^a, Xu Bao (徐宝)^a, Sun Yun-Bin (孙运斌)^a, Zhang Xue-Feng (张雪峰)^b, Lu Yi (鲁毅)^a, Zhao Jian-Jun (赵建军)^a

a Department of Physics, Baotou Normal University, Baotou 014030, China;
b Inner Mongolia Key Laboratory for Utilization of Bayan Obo Multi-Metallic Resources, and Elected State Key Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China

Received:2013-11-15 Revised:2014-03-18 Online:2014-07-15 Published:2014-07-15
Contact: Zhao Jian-Jun E-mail:nmzhaojianjun@126.com
About author:76.30.-v; 75.47.Lx; 75.30.Gw
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11164019 and 11064008) and the Inner Mongolia Natural Science Foundation, China (Grant Nos. NJZZ11166, NJZY10163, NJZY12202, 2011MS0101, 2011MS0108, and 2009MS0101).

摘要/Abstract

摘要： The effect of Eu³⁺ ion doping in the La sites of single-crystal La_4/3Sr_5/3Mn₂O₇ was investigated. Electron spin resonance (ESR) was applied to La_4/3Sr_5/3Mn₂O₇ and (La_0.8Eu_0.2)_4/3Sr_5/3Mn₂O₇ single crystals. A phase separation and phase transitions were observed from the ESR spectra data. Between 350 K and 300 K, both paramagnetic resonance (PMR) and anisotropic ferromagnetic resonance (FMR) lines were observed in the ab plane and the c axis direction, suggesting a coexistence of the paramagnetic (PM) phase and the ferromagnetic (FM) phase. The magnetization measurement reveals a spin-glass-like behavior in single-crystal (La_0.8Eu_0.2)_4/3Sr_5/3Mn₂O₇ below the temperature of spin freezing T_f (～ 29.5 K).

关键词: electron spin resonance, manganite single crystal, phase separation, anisotropy

Abstract: The effect of Eu³⁺ ion doping in the La sites of single-crystal La_4/3Sr_5/3Mn₂O₇ was investigated. Electron spin resonance (ESR) was applied to La_4/3Sr_5/3Mn₂O₇ and (La_0.8Eu_0.2)_4/3Sr_5/3Mn₂O₇ single crystals. A phase separation and phase transitions were observed from the ESR spectra data. Between 350 K and 300 K, both paramagnetic resonance (PMR) and anisotropic ferromagnetic resonance (FMR) lines were observed in the ab plane and the c axis direction, suggesting a coexistence of the paramagnetic (PM) phase and the ferromagnetic (FM) phase. The magnetization measurement reveals a spin-glass-like behavior in single-crystal (La_0.8Eu_0.2)_4/3Sr_5/3Mn₂O₇ below the temperature of spin freezing T_f (～ 29.5 K).

Key words: electron spin resonance, manganite single crystal, phase separation, anisotropy

中图分类号: (Electron paramagnetic resonance and relaxation)

76.30.-v

75.47.Lx (Magnetic oxides) 75.30.Gw (Magnetic anisotropy)

何利民, 冀钰, 吴鸿业, 徐宝, 孙运斌, 张雪峰, 鲁毅, 赵建军. An electron spin resonance study of Eu doping effect in La_4/3Sr_5/3Mn₂O₇ single crystal[J]. 中国物理B, 2014, 23(7): 77601-077601.

He Li-Min (何利民), Ji Yu (冀钰), Wu Hong-Ye (吴鸿业), Xu Bao (徐宝), Sun Yun-Bin (孙运斌), Zhang Xue-Feng (张雪峰), Lu Yi (鲁毅), Zhao Jian-Jun (赵建军). An electron spin resonance study of Eu doping effect in La_4/3Sr_5/3Mn₂O₇ single crystal[J]. Chin. Phys. B, 2014, 23(7): 77601-077601.

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An electron spin resonance study of Eu doping effect in La_4/3Sr_5/3Mn₂O₇ single crystal

An electron spin resonance study of Eu doping effect in La_4/3Sr_5/3Mn₂O₇ single crystal

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