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Magnetic entropy change and accurate determination of Curie temperature in single-crystalline helimagnet FeGe

文献类型：期刊论文

作者Xu, Lisha1; Han, Hui2; Fan, Jiyu1; Shi, Daning1; Hu, Dazhi1; Du, Haifeng2; Zhang, Lei2; Zhang, Yuheng2; Yang, Hao1
刊名EPL
出版日期2017-02-01
卷号117期号:4
DOI10.1209/0295-5075/117/47004
文献子类Article
英文摘要Cubic helimagnet FeGe has emerged as a class of skyrmion materials near room temperature that may impact future information technology. Experimentally identifying the detailed properties of skyrmion materials enables their practical application acceleratedly. Here we study the magnetic entropy change (MEC) of single-crystalline FeGe in its precursor region and clarify its close relation to the critical exponents of a second-order phase transition in this area. The maximum MEC is found to be 2.86 J/kg . K for a 7.0 T magnetic-field change smaller than that of common magnetocaloric materials indicating the multiplicity and complexity of the magnetic structure phases in the precursor region. This result also implies that the competition among the multimagnetic phases can partly counteract the magnetic-field-driven force and establishes a stable balance. Based on the obtained MEC and the critical exponents, the exact Curie temperature of single-crystalline FeGe under zero magnetic field is confirmed to be 279.1 K, higher than the previously reported 278.2 K. This finding paves the way for reconstruction of the FeGe phase diagram in the precursor region. Copyright (C) EPLA, 2017
WOS关键词CUBIC FEGE ; CRITICAL-POINT ; TRANSITIONS ; MANGANITE ; STATES
WOS研究方向Physics
语种英语
WOS记录号WOS:000401166400015
资助机构National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; National Nature Science Foundation of China(U1632122 ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140) ; U1332140)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/33432]  
专题合肥物质科学研究院_中科院强磁场科学中心
作者单位1.Nanjing Univ Aeronaut & Astronaut, Dept Appl Phys, Nanjing 210016, Jiangsu, Peoples R China
2.Chinese Acad Sci, High Field Magnet Lab, Anhui Key Lab Condensed Matter Phys Extreme Condi, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Lisha,Han, Hui,Fan, Jiyu,et al. Magnetic entropy change and accurate determination of Curie temperature in single-crystalline helimagnet FeGe[J]. EPL,2017,117(4).
APA Xu, Lisha.,Han, Hui.,Fan, Jiyu.,Shi, Daning.,Hu, Dazhi.,...&Yang, Hao.(2017).Magnetic entropy change and accurate determination of Curie temperature in single-crystalline helimagnet FeGe.EPL,117(4).
MLA Xu, Lisha,et al."Magnetic entropy change and accurate determination of Curie temperature in single-crystalline helimagnet FeGe".EPL 117.4(2017).

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来源：合肥物质科学研究院

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