Effect of substitution of Mn with Fe or Cr in Heusler alloy of Co2MnSn
Effect of substitution of Mn with Fe or Cr in Heusler alloy of Co2MnSn
复制标题
Co2MnSn Heusler合金中Fe或Cr替代Mn的效果
DOI：
10.1088/0953-8984/17/42/006
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
K. Yoshimura
中科院分区：
文献类型：
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作者：
W. Zhang;N. Jiko;K. Mibu;K. Yoshimura
使用 X 射线衍射、具有能量色散 X 射线分析的扫描电子显微镜、磁化测量和穆斯堡尔谱研究了 Co2Mn1−xFexSn 和 Co2Mn1−y CrySn Heusler 合金的晶体学和磁性。我们发现，对于Co2Mn1−xFexSn，当浓度为0≤x≤0.5；对于Co2Mn1−yCrySn，当浓度为0≤y≤0.3时，金属间化合物结晶成具有L 21 型Heusler结构的单相。当Mn被Fe取代时自发磁化强度增加，当Mn被Cr取代时自发磁化强度降低。 Co2Mn1−xFexSn 和 Co2Mn1−yCrySn 中 Sn 核位点的超精细场值也随着磁化强度的大小而增加或减少。这些测量表明，半金属全霍斯勒合金中的斯莱特-鲍林行为很好地描述了 Mn 与 Fe 或 Cr 的替代效应。
Crystallographic and magnetic properties of Co2Mn1−xFexSn and Co2Mn1−y CrySn Heusler alloys were studied using x-ray diffraction, scanning electron microscopy with energy dispersive x-ray analysis, magnetization measurements and Mössbauer spectroscopy. We found that the intermetallic compounds crystallize into a single phase with the L 21-type Heusler structure at the concentration of 0≤x≤0.5 for Co2Mn1−xFexSn and 0≤y≤0.3 for Co2Mn1−yCrySn. The spontaneous magnetization increases when Mn is substituted with Fe and decreases when Mn is substituted with Cr. The values of hyperfine field at the Sn nuclear sites in Co2Mn1−xFexSn and Co2Mn1−yCrySn also increase or decrease in combination with the size of magnetization. These measurements suggest that the Slater–Pauling behaviour in half-metallic full-Heusler alloys provides a good description of the substitution effect of Mn with Fe or Cr.
DOI：
10.1143/jjap.42.l419
发表时间：
2003-04-15
期刊：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS
影响因子：
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作者：
Inomata, K;Okamura, S;Tezuka, N
通讯作者：
Tezuka, N