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

作者：He Li-Min; Ji Yu; Wu Hong-Ye; Xu Bao; Sun Yun-Bin; Zhang Xue-Feng; Lu Yi; Zhao Jian-Jun^*

来源：Chinese Physics B, 2014, 23(7): 077601.

DOI：10.1088/1674-1056/23/7/077601

• electron spin resonance
• manganite single crystal
• phase separation
• anisotropy

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)(4/3)Sr5/3Mn2O7 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)(4/3)Sr5/3Mn2O7 below the temperature of spin freezing T-f (similar to 29.5 K).

• 出版日期2014-7
• 单位内蒙古科技大学; 内蒙古科技大学包头师范学院