| MnFeP_(0.45)As_(0.55)材料中的相变研究 |
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| 引用本文： | 朱志永,王文全,苗元华,王岩松,陈丽婕,代学芳,刘国栋,陈京兰,吴光恒. MnFeP_(0.45)As_(0.55)材料中的相变研究[J]. 物理学报, 2005, 0(10) |
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| 作者姓名： | 朱志永 王文全 苗元华 王岩松 陈丽婕 代学芳 刘国栋 陈京兰 吴光恒 |
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| 作者单位： | 吉林大学物理学院 长春130023(朱志永，王文全，苗元华，王岩松)，中国科学院物理研究所北京凝聚态物理国家实验室 北京100080(陈丽婕，代学芳，刘国栋，陈京兰)，中国科学院物理研究所北京凝聚态物理国家实验室 北京100080(吴光恒) |
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| 基金项目： | 国家自然科学基金(批准号:50471056)资助的课题.~~ |
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| 摘 要： | 利用不同的测量方法,研究了MnFeP1-xAsx(0·32
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| 关 键 词： | MnFePAs 磁致伸缩 巡游电子变磁性 一级磁相变 |
Characterization of transitions in MnFeP_(0.45)As_(0.55) compound |
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| Zhu Zhi-Yong Wang Wen-Quan Miao Yuan-Hua Wang Yan-Song. Characterization of transitions in MnFeP_(0.45)As_(0.55) compound[J]. Acta Physica Sinica, 2005, 0(10) |
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| Authors: | Zhu Zhi-Yong Wang Wen-Quan Miao Yuan-Hua Wang Yan-Song |
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| Abstract: | The resistance, magnetization and strain measurements have been carried out on MnFeP_ 0.45 As_ 0.55 compound. We found that, at variance with what is commonly believed, the critical temperature points for the first order transition, paramagnetism-ferromagnetism transition, and lattice anomaly are not identical. The first order transition goes on in a quite wide temperature range with a thermal hysteresis of about 10K. In the duration of the first order transition, the paramagnetism-ferromagnetism transition is observed, which indicates that they are not related to the lattice anomaly. Thus, we attribute it to the continuous change of the lattice parameters due to the structure transition based on our observation and Zach et al.'s work. On the other hand, the lattice anomaly occurs at lower temperature than that of the first order structural and magnetic transitions. We conclude that it is a magnetostrictive behavior associated with the magnetoelastic coupling below the Curie temperature. |
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| Keywords: | MnFePAs magnetostriction itinerant-electron metamagnetism first order phase transition |
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