Magnetic transition behavior of perovskite manganites Nd0.5Sr0.3Ca0.2MnO3 polycrystalline
Ru Xing(邢茹)1,2, Su-Lei Wan(万素磊)1, Wen-Qing Wang(王文清)1, Lin Zheng(郑琳)1, Xiang Jin(金香)1, Min Zhou(周敏)2, Yi Lu(鲁毅)1,2, Jian-Jun Zhao(赵建军)1,2
1 Department of Physics, Baotou Normal University, Baotou 014030, China; 2 Inner Mongolia Key Laboratory of Magnetism and Magnetic Materials, Baotou 014030, China
Abstract A polycrystalline sample Nd0.5Sr0.3Ca0.2MnO3 is prepared by the conventional solid state reaction method. The structure and magnetic properties are investigated with x-ray diffraction (XRD) patterns, a superconducting quantum interference device (SQUID), and electron spin resonance (ESR). The sample is in single phase with the space group Pbnm symmetry. With the decrease of temperature, Nd0.5Sr0.3Ca0.2MnO3 undergoes three magnetic transitions: ferromagnetic transition at TC ≈ 210 K, charge-ordering at TCO ≈ 175 K, and antiferromagnetic transition at TN=155 K. In addition, the activation energy Ea ≈ 52.78 meV can be extracted by curve fitting.
(Magnetization curves, hysteresis, Barkhausen and related effects)
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11164019, 51562032，and 61565013), the Inner Mongolia Natural Science Foundation, China (Grant Nos. 2015MS0109, NJZZ11166, and NJZY12202), and the Science and Technology in Baotou Production-Study-Research Cooperation Projects, China (Grant No. 2014X1014-01).
Ru Xing(邢茹), Su-Lei Wan(万素磊), Wen-Qing Wang(王文清), Lin Zheng(郑琳), Xiang Jin(金香), Min Zhou(周敏), Yi Lu(鲁毅), Jian-Jun Zhao(赵建军) Magnetic transition behavior of perovskite manganites Nd0.5Sr0.3Ca0.2MnO3 polycrystalline 2016 Chin. Phys. B 25 047601
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