Half-Metallic Properties and Stability of Ferromagnetic State in the Full-Heusler Alloys (FexRu1-x)2CrSi (0〓x〓1)

• Mizutani Sou

  The Graduate School of Science and Engineering, Kagoshima University

• Ishida Shoji

  Department of Physics, Faculty of Science, Kagoshima University

• Fujii Sinpei

  Department of Physics, Faculty of Science, Kagoshima University

• Asano Setsuro

  Institute of Physics, College of Arts and Sciences, University of Tokyo

書誌事項

タイトル別名

• Half-Metallic Properties and Stability of Ferromagnetic State in the Full-Heusler Alloys (Fe<I><SUB>x</SUB></I>Ru<SUB>1−<I>x</I></SUB>)<SUB>2</SUB>CrSi (0≤<I>x</I>≤1)
• Half Metallic Properties and Stability of Ferromagnetic State in the Full Heusler Alloys FexRu1 x 2CrSi 0 x 1
• Half-Metallic Properties and Stability of Ferromagnetic State in the Full-Heusler Alloys (Fe<I><SUB>x</SUB></I>Ru<SUB>1&minus;<I>x</I></SUB>)<SUB>2</SUB>CrSi (0&le;<I>x</I>&le;1)
• Half-metallic properties and stability of ferromagnetic state in the full-Heusler alloys <formula formulatype="inline"><tex Notation="TeX">$({\hbox{Fe}}_x{\hbox{Ru}}_{1-x})_2{\hbox{CrSi}}$</tex> </formula> (<formula formulatype="inline"><tex Notation="TeX">$0\leq x \leq 1$</tex></formula>)

抄録

We investigate the half-metallic properties and the stability of the ferromagnetic state in the alloys (Fe_xRu_1−x)₂CrSi (0≤x≤1) with orderly and disorderly atomic arrangement based on the Heusler structure. It is predicted from the electronic structures that the ordered alloys are half-metals in the range of 1⁄3<x<3⁄4 and ferromagnets with high spin polarization in the range of 3⁄4≤x≤1. However, in the ferromagnetic state, the atomic arrangement with the Fe–Cr disorder tends to be energetically more favorable than the orderly arrangement, and the Fe–Cr disorder decreases the spin polarization of the ordered alloys. This is attributed to the fact that occupation of Cr sites by Fe destroys the gap near the Fermi energy in the minority spin state. But, because the Fe–Cr disorder shows a tendency to keep the spin polarization high as x increases, it is deduced that (Fe_xRu_1−x)₂CrSi are materials with high spin polarization if x is high.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 47 (1), 25-30, 2006

  公益社団法人 日本金属学会

キーワード

• half-metal
• electronic structure
• atomic disorder
• stability of ferromagnetic state
• iron–ruthenium–chromium–silicon

詳細情報

• CRID: 1390001204250627712
• NII論文ID: 130004452930
• NII論文ID: 10017151074
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.47.25
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 7772750
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7772750
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/47/1/47_1_25/_pdf
• 本文言語コード: en
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