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Magnetization loops and non-scaling behavior of flux pinning force of Fe1+y Te1-x Se (x) studied by numerical simulation

文献类型：期刊论文

作者Huang, Xiaofei2; Sun, Yue2; Pan, Yongqiang1,2; Shi, Zhixiang2
刊名SUPERCONDUCTOR SCIENCE & TECHNOLOGY
出版日期2022-10-01
卷号35
关键词iron-based superconductors numerical calculation flux pinning second magnetic peak effect
ISSN号0953-2048
DOI10.1088/1361-6668/ac87d9
通讯作者Pan, Yongqiang(panyongqiang1203@163.com) ; Shi, Zhixiang(zxshi@seu.edu.cn)
英文摘要The magnetization of type-II superconductors has usually been described using the critical state models (CSMs). However, CSMs do not consider the time-dependent magnetic relaxation. In this work, to study the influence of magnetic relaxation on the magnetic hysteresis loops (MHLs), critical current density J (c), and flux pinning force F (p), a numerical method proposed by (Qin and Yao 1996 Phys. Rev. B 54 7536) was adopted and extended to the quasi-two-dimensional case. MHLs at different temperatures measured by using applied field with different sweeping rates can be well reproduced. The critical current density after relaxation J (s), and F (p) can also fit the experimental results well. Based on the numerical simulation, the non-scaling behavior of field-dependent normalized pinning force has been proven to be due to the magnetic relaxation. By comparing the normalized pinning force with the Dew-Hughes model, the dominant pinning type in Fe1+y Te0.6Se0.4 has been confirmed to be the volume Delta kappa pinning. In addition, the second peak effect is found to be related to the flux lattice transition from elastic lattice to plastic lattice (E-P transition).
WOS关键词SUPERCONDUCTIVITY
资助项目National Key R&D Program of China[2018YFA0704300] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB25000000] ; Fundamental Research Funds for the Central University[2242022R10076]
WOS研究方向Physics
语种英语
WOS记录号WOS:000841992700001
出版者IOP Publishing Ltd
资助机构National Key R&D Program of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central University
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/132039]  
专题中国科学院合肥物质科学研究院
通讯作者Pan, Yongqiang; Shi, Zhixiang
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
2.Southeast Univ, Sch Phys, Nanjing 211189, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Xiaofei,Sun, Yue,Pan, Yongqiang,et al. Magnetization loops and non-scaling behavior of flux pinning force of Fe1+y Te1-x Se (x) studied by numerical simulation[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2022,35.
APA Huang, Xiaofei,Sun, Yue,Pan, Yongqiang,&Shi, Zhixiang.(2022).Magnetization loops and non-scaling behavior of flux pinning force of Fe1+y Te1-x Se (x) studied by numerical simulation.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,35.
MLA Huang, Xiaofei,et al."Magnetization loops and non-scaling behavior of flux pinning force of Fe1+y Te1-x Se (x) studied by numerical simulation".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 35(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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