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个人信息Personal Information
教授 博士生导师
招生学科专业：
物理学 -- 【招收博士、硕士研究生】 -- 物理学院
电子信息 -- 【招收博士、硕士研究生】 -- 物理学院
性别：男
毕业院校：中国科学技术大学
学历：中国人民共和国科学技术大学
学位：理学博士学位
所在单位：物理学院
办公地点：理学院454办公室
联系方式：jiyufan@nuaa.edu.cn
电子邮箱：
Unambiguous determining the Curie point in perovskite manganite with second-order phase transition by scaling method
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所属单位：理学院
发表刊物：PHYSICS LETTERS A
关键字：Scaling law Manganite Magnetocaloric effect Phase transitions
摘要：The accurate determination of the Curie temperature (T-C) is particularly important in describing the magnetic behavior close to the paramagnetic-ferromagnetic (PM-FM) phase transition. In this paper, we studied the magnetic phase transition and accurately predicted the Curie point of perovskite manganite La0.825Sr0.175MnO3. We find the compound shows a second-order PM-FM transition and has a large magnetic entropy change (MEC) in vicinity of phase transition region. Based on the scaling law and the correlation between magnetic field and MEC, the precise and magnetic-independent Curie temperature was determined to be 281.7 K, obviously lower than 285.4 K decided from the magnetization versus temperature. The reliability of new Curie temperature can be well confirmed by the modified Arrott plot together with the critical exponents. Our results not only open up a new pathway for precise definition of Curie point but also facilitate the efficient exploitation of spontaneous magnetic bubbles in perovskite manganite. (C) 2019 Elsevier B.V. All rights reserved.
ISSN号：0375-9601
是否译文：否
发表时间：2019-09-12
合写作者：Xie, Yunfei,Xu, Lisha,Zhang, Xiyuan,Xu, Ruixing,朱岩,杨浩
通讯作者：樊济宇