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题名: Structure Characterization and Magnetic Properties of Ln0.7Pb0.3MnO3 (Ln=La, Nd, and Pr) Manganites
作者: Young, S. L.;Chen, Y. C.;Horng, Lance;Wu, T. C.;Chang, J. C.
贡献者: 物理學系
关键词: Rhombohedral;Orthorhombic;ZFC;FC;Manganite;Spin-glass
日期: 2002-02
上传时间: 2013-02-05T02:18:10Z
出版者: Elsevier
摘要: Ln 0.7Pb0.3MnO3 (Ln=La, Nd, Pr) oxides have been synthesized by using the conventional ceramic method. The
magnetic measurements show that Tc values alter considerably by substituting different rare earth ions. The zero field
cooled (ZFC) magnetization curve of La manganite shows almost the same magnitude with the field cooled (FC);
however, the curve of Nd manganite drops to zero at low temperatures. The magnetization is hardly saturated by the
external field for Pr and Nd manganites due to the spin-glass nature. These facts are in good agreement with the lower
ionic radii of the Nd ions and the corresponding large distortion of their perovskite structures. r 2002 Elsevier Science
B.V. All rights reserved.
關聯: Journal of Magnetism and Magnetic Materials, 239(1-3): 11-13
显示于类别:[物理學系] 期刊論文

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