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题名: Magnetization Processes in Polycrystalline (La0.7 xNdx)Pb0.3MnO3
作者: Young, S. L.;Chen, H. Z.;Lin, C. H.;Horng, Lance;Shi, J. B.;Chen, Y. C.
贡献者: 物理學系
关键词: Magnetization;Perovskite;ZFC;FC;Spin-glass;Hysteresis
日期: 2002-02
上传时间: 2013-02-05T02:18:11Z
出版者: Elsevier
摘要: Magnetization processes for the Nd substitution on the La site in polycrystalline (La0.7−xNdx)Pb0.3MnO3 have been systematically studied. The low-field magnetic behavior observed in ZFC and FC curves shows a long-range spin order for La-rich compounds and a spin-glass state for Nd-rich ones. Magnetic hysteresis loops with high field show square curves for all samples. The hysteresis behavior can be modeled by the formula of M=Ms(1–a/Hn) where 0≦n≦1. The term a/Hn expresses the deviation of magnetization from saturation. The larger factor n and smaller factor a for La-rich samples resulting in sharper square curves which should be associated with the long-range spin order of magnetic moment.
關聯: Journal of Magnetism and Magnetic Materials, 239(1-3): 70-72
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