Magnetic Field Effect on Critical Behavior of Perovskite Ferromagnet
来源期刊：JOURNAL OF RARE EARTHS2005年第5期
论文作者：Chen Yanping Ding Tao Tian Hongwei Zheng Weitao Wang Xin Kan Dongwu
Key words：critical behavior; perovskite ferromagnet; manganite; rare earths;
Abstract: The polycrystalline samples of La2/3Ca1/3MnO3 were prepared by a conventional solid state reaction method. The magnetizations (ZFC, FC and initial magnetization) of the polycrystalline La2/3Ca1/3MnO3 were measured with superconducting quantum interference device magnetometer. The scaling theory was employed to study the changes of critical behavior arising from the applied external field. The critical parameter β decreases with increasing the external magnetic field results in an increase in the magnitude of ferromagnetic ordering.
Chen Yanping1，Ding Tao2，Tian Hongwei2，Zheng Weitao2，Wang Xin2，Kan Dongwu2
(1.School of Chemistry, Jilin University, Changchun 130012, China;
2.Department of Materials Science and Key Laboratory of Automobile Materials of MOE, Jilin University, Changchun 130012, China)
Abstract:The polycrystalline samples of La2/3Ca1/3MnO3 were prepared by a conventional solid state reaction method. The magnetizations (ZFC, FC and initial magnetization) of the polycrystalline La2/3Ca1/3MnO3 were measured with superconducting quantum interference device magnetometer. The scaling theory was employed to study the changes of critical behavior arising from the applied external field. The critical parameter β decreases with increasing the external magnetic field results in an increase in the magnitude of ferromagnetic ordering.
Key words:critical behavior; perovskite ferromagnet; manganite; rare earths;
【全文内容正在添加中】
