Electron spin resonance study of the Ba-doping manganite Nd0.5Sr0.5MnO3
Zhao Jian-Jun(赵建军)a)b)†, Xing Ru(邢茹)a), Lu Yi(鲁毅)a), Haosibayar(浩斯巴雅尔)a), Zhao Ming-Yu(赵明宇)a), Jin Xiang(金香)a), Zheng Lin(郑琳)a), Ning Wei(宁伟)b), Sun Young(孙阳)b), and Cheng Zhao-Hua(成昭华)b)
a Department of Physics, Baotou Normal University, Inner Mongolia Autonomous Regions, Baotou 014030, China; b State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Abstract We have performed magnetization measurements and electron spin resonance (ESR) on polycrystalline manganites of Nd$_{0.5}$Sr$_{0.5 - x}$Ba$_{x}$MnO$_{3}$ ($x = 0.1$). Phase separation and phase transitions are observed from the susceptibility and the ESR spectra data. Between 260 K ($\sim T_{\rm C})$ and 185 K ($\sim T_{\rm N})$, the system coexists of the paramagnetic phase and the ferromagnetic (FM) phase. Between 185 K and 140 K, the system coexists of the FM phase and the antiferromagnetic (AFM) phase. These results indicate that the system has a very complex magnetic state due to the origin of the instability stemming from manganite Nd$_{0.5}$Sr$_{0.4}$Ba$_{0.1}$MnO$_{3}$ by partially substituting the larger Ba$^{2 + }$ ions for the smaller Sr$^{2 + }$ ions.
Received: 18 January 2008
Revised: 04 March 2008
Accepted manuscript online:
PACS:
75.60.Ej
(Magnetization curves, hysteresis, Barkhausen and related effects)
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 50672126) and the
Inner Mongolia Natural Science Foundation of China (Grant No
200607010102).
Cite this article:
Zhao Jian-Jun(赵建军), Xing Ru(邢茹), Lu Yi(鲁毅), Haosibayar(浩斯巴雅尔), Zhao Ming-Yu(赵明宇), Jin Xiang(金香), Zheng Lin(郑琳), Ning Wei(宁伟), Sun Young(孙阳), and Cheng Zhao-Hua(成昭华) Electron spin resonance study of the Ba-doping manganite Nd0.5Sr0.5MnO3 2008 Chin. Phys. B 17 2721
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