Substitution effects of cr or fe on the curie temperature for Mn-based layered compounds MnAlGe and MnGaGe with Cu2Sb-type structure

Rie Y. Umetsu*, Yoshifuru Mitsui, Isamu Yuito, Teruaki Takeuchi, Hiroshi Kawarada

*この研究の対応する著者

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Structure, lattice parameters, spontaneous magnetization (Is), and the Curie temperature (TC) of MnAlGe and MnGaGe compounds with the Cu2 Sb-type structure and their substituted compounds were investigated. Cr substitution for Mn enhanced Is and TC, whereas Fe substitution for Mn degraded them. These behaviors are in accord with the previously reported results, and are also common to the MnGaGe compound series. For MnAlGe, lattice parameter a increases by 0.2% and 0.4% for Cr and Fe substitution, while c changes by +0.1% and -1.3%, respectively. For MnGaGe, a decreases by 0.08% for Cr and increases by 0.2% for Fe substitution, while c changes by +0.5% and -1.0%, respectively. TC tended to increase with increasing length of c, suggesting that the interlayer distance between Mn layers is a key factor related to the height of TC, i.e., the strength of the magnetic exchange interaction.

本文言語English
論文番号6971459
ジャーナルIEEE Transactions on Magnetics
50
11
DOI
出版ステータスPublished - 2014 11 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

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