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 La4/3Sr5/3Mn2O7 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   

  1. 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 La4/3Sr5/3Mn2O7 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   

  1. 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: The effect of Eu3+ ion doping in the La sites of single-crystal La4/3Sr5/3Mn2O7 was investigated. Electron spin resonance (ESR) was applied to La4/3Sr5/3Mn2O7 and (La0.8Eu0.2)4/3Sr5/3Mn2O7 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 (La0.8Eu0.2)4/3Sr5/3Mn2O7 below the temperature of spin freezing Tf (~ 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 La4/3Sr5/3Mn2O7 was investigated. Electron spin resonance (ESR) was applied to La4/3Sr5/3Mn2O7 and (La0.8Eu0.2)4/3Sr5/3Mn2O7 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 (La0.8Eu0.2)4/3Sr5/3Mn2O7 below the temperature of spin freezing Tf (~ 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)