采用传统固相反应法制备了EuCrO3和Eu1-xCaxCrO3多晶样品,研究了其磁性质.实验结果显示,样品的零场冷磁化曲线的测量不具有重复性.在冷却过程中,由于超导磁体中残留捕获场的存在,样品中未被补偿的自旋磁矩被诱导沿捕获场方向择优取向,从而决定了零场冷磁化强度在磁相变温度以下的极性.样品在经历一个非完美零场冷却过程以后,得到的名义零场冷磁化曲线对捕获场具有很大的依赖性.
参考文献
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[2] | A.K. Azad;A. Mellergard;S.-G. Eriksson;S.A. Ivanov;S.M. Yunus;F. Lindberg;G. Svensson;R. Mathieu .Structural and magnetic properties of LaFe_(0.5)Cr_(0.5)O_3 studied by neutron diffraction, electron diffraction and magnetometry[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2005(10):1633-1644. |
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