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First-order magnetic transition, magnetocaloric effect and moment formation in MnFe(P,Ge) magnetocaloric materials revisited by x-ray magnetic circular dichroism
Wurentuya, B.1,2,3; Yibole, H.3; Guillou, F.3; Ou, Zhiqiang3; Zhang, Zhidong1,2; Tegus, O.3
Corresponding AuthorTegus, O.(tegusph@imnu.edu.cn)
2018-09-01
Source PublicationPHYSICA B-CONDENSED MATTER
ISSN0921-4526
Volume544Pages:66-72
AbstractFe2P-based materials are attracting great interest for their giant magnetocaloric effect making them highly promising candidates for a new energy efficient-magnetic cooling technology. In light of recent results reported in the MnFe(P,Si) and MnFe(P,Si,B) series, here we revisit the effect of Ge substitution for P. By fixing the Mn/Fe ratio to unity while exploring a large range of Ge content, we isolate the effect Ge plays as metalloid element. In contrast to other metalloids (like Si, B or As), Ge substitution for P is found to spectacularly increase the Curie temperature, while preserving the first-order character of the transition. As a consequence, Ge substitution for P provides a mean to achieve giant magnetocaloric performances up to high temperatures (at least 465 K). In addition, the moment formation in MnFe(P,Ge) is investigated using an element specific and orbital selective magnetization probe, x-ray magnetic circular dichroism. The magnetic moments carried by Mn atoms are found to be significantly larger than that of Fe, providing a direct experimental support to reported band structure calculations and neutron diffraction experiments.
KeywordMagnetocaloric effect Magnetic phase transition XMCD
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.physb.2018.05.002
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51161017] ; National Natural Science Foundation of China[51531008]
WOS Research AreaPhysics
WOS SubjectPhysics, Condensed Matter
WOS IDWOS:000434382300010
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128350
Collection中国科学院金属研究所
Corresponding AuthorTegus, O.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
3.Inner Mongolia Normal Univ, Coll Phys & Elect Informat, Hohhot 010022, Peoples R China
Recommended Citation
GB/T 7714
Wurentuya, B.,Yibole, H.,Guillou, F.,et al. First-order magnetic transition, magnetocaloric effect and moment formation in MnFe(P,Ge) magnetocaloric materials revisited by x-ray magnetic circular dichroism[J]. PHYSICA B-CONDENSED MATTER,2018,544:66-72.
APA Wurentuya, B.,Yibole, H.,Guillou, F.,Ou, Zhiqiang,Zhang, Zhidong,&Tegus, O..(2018).First-order magnetic transition, magnetocaloric effect and moment formation in MnFe(P,Ge) magnetocaloric materials revisited by x-ray magnetic circular dichroism.PHYSICA B-CONDENSED MATTER,544,66-72.
MLA Wurentuya, B.,et al."First-order magnetic transition, magnetocaloric effect and moment formation in MnFe(P,Ge) magnetocaloric materials revisited by x-ray magnetic circular dichroism".PHYSICA B-CONDENSED MATTER 544(2018):66-72.
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