Evidence for localized moment picture in Mn-based Heusler compounds.

Evidence for localized moment picture in Mn-based Heusler compounds.
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锰基赫斯勒化合物中局部矩图的证据。

DOI:
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发表时间:
2015
期刊:
Physical Chemistry, Chemical Physics - PCCP
影响因子:
--
通讯作者:
C. Felser
C. Felser
中科院分区:
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文献类型:
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作者:
J. Karel;F. Bernardi;C. Wang;R. Stinshoff;N.;S. Ouardi;U. Burkhardt;G. Fecher;C. Felser

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用X射线吸收光谱(XAS)和X射线磁性圆二色谱(XMCD)研究了不同晶体结构的Heusler化合物中Mn的电子结构和磁矩。结果与磁学和电学性质的理论计算结果相比较,发现在全和半Heusler合金中,在两个亚晶格上,Mn都是金属的。当主基元配位为八面体时,磁矩较大且局域化,与前人的理论工作一致,当主基元配位为四面体时,磁矩减小。全和半Heusler化合物中Mn的磁性和电学性质强烈地依赖于结构和亚晶格,这一事实可以被用来设计新的材料。
X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD) were used to probe the electronic structure and magnetic moment of Mn in Heusler compounds with different crystallographic structure. The results were compared with theoretical calculations of the magnetic and electronic properties, and it was found that in full and half Heusler alloys, Mn is metallic on both sublattices. The magnetic moment is large and localized when octahedrally coordinated by the main group element, consistent with previous theoretical work, and reduced when the main group coordination is tetrahedral. The magnetic and electronic properties of Mn in full and half Heusler compounds are strongly dependent on the structure and sublattice, a fact that can be exploited to design new materials.
DOI: 10.1038/ncomms4974
发表时间: 2014-05-30
影响因子: 16.6
作者:
Jourdan, M.;Minar, J.;Braun, J.;Kronenberg, A.;Chadov, S.;Balke, B.;Gloskovskii, A.;Kolbe, M.;Elmers, H. J.;Schoenhense, G.;Ebert, H.;Felser, C.;Klaeui, M.
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