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논문 기본 정보

자료유형
학술저널
저자정보
Yan Zhang (Chang’an University) Hua-Xin Chen (Chang’an University) Li Duan (Chang’an University) Lei Ni (Chang’an University) Ji-Bin Fan (Chang’an University) Jie Wang (Chang’an University) Guang-Teng Ci (Chang’an University) Vincent Ji (Université Paris-Sud)
저널정보
한국자기학회 Journal of Magnetics Journal of Magnetics Vol.24 No.3
발행연도
2019.9
수록면
413 - 422 (10page)
DOI
10.4283/JMAG.2019.24.3.413

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초록· 키워드

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The structural, half-metallic (HM) and magnetic properties of the imperfect Pb₂FeReO<SUB>6</SUB> containing eight different inherent defects of the Fe<SUB>Re</SUB> or Re<SUB>Fe</SUB> antisites, Fe1-Re1 or Fe1-Re4 interchanges, V<SUB>Fe</SUB>, V<SUB>Re</SUB>, V<SUB>O</SUB> or V<SUB>Pb</SUB> vacancies have been studied by first-principles calculations. No obvious structural changes are observed for Fe<SUB>Re</SUB> or Re<SUB>Fe</SUB> antisites, Fe1-Re1 or Fe1-Re4 interchanges and V<SUB>Pb</SUB> vacancy defects, however, the six (two) nearest neighbors O (Fe or Re) of the vacancy move away from (close to) V<SUB>Fe</SUB> or V<SUB>Re</SUB> (V<SUB>O</SUB>) vacancies. The HM character is maintained for Fe<SUB>Re</SUB> or Re<SUB>Fe</SUB> antisites, far Fe1-Re4 interchange, V<SUB>Fe</SUB>, V<SUB>O</SUB> or V<SUB>Pb</SUB> vacancies, while vanished for near Fe1-Re1 interchange or V<SUB>Re</SUB> vacancy. So the near Fe1-Re1 interchange or V<SUB>Re</SUB> vacancy defects should be avoided to preserve the HM character of the Pb₂FeReO<SUB>6</SUB> and thus usable in spintronics devices. Except for the Fe<SUB>Re</SUB> antisite case with a slightly higher total moment, the total moments μ<SUB>tot</SUB> of the imperfect Pb₂FeReO<SUB>6</SUB> with the other seven inherent defects are smaller than 3.96 μ<SUB>B</SUB>/f.u. of the perfect Pb₂FeReO<SUB>6</SUB>.

목차

1. Introduction
2. Calculation Method and Models
3. Results and Discussions
4. Conclusions
References

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