Journal of the Korean Magnetics Society (한국자기학회지)

The Korean Magnetics Society (한국자기학회)
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Magnetic Properties of Fe-Pt Nanowires with Linear and Zigzag Structures

전이금속 Fe-Pt 나노선의 자기적 성질

  • Jang, Y.R. (Department of Physics, University of Incheon) ;
  • Jo, Chul-Su (Department of Physics, Inha University, Department of Physics and Astronomy, University of California) ;
  • Lee, J.I. (Department of Physics, Inha University)
  • Published : 2005.12.01
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Abstract

We investigated the structural md magnetic properties of Fe-Pt nanowires with linear and zigzag structures by using first-principle calculational methods. Structural degrees of freedom are optimized, the bond lengths and bond angles are determined, magnetic moments, spin density, and density of states are calculated. Results show that the zigzag structure is more stable than the linear one, and has a longer bond length and smaller magnetic moments for both Fe and Pt atoms.

전이금속 Fe-Pt 나노선의 자기적 성질을 수도퍼텐셜 및 전전자(all-electron) 제일원리 전자구조 계산 방법으로 연구하였다. 직선 구조와 지그재그 구조에 대해서 결합에너지를 계산함으로써 안정된 구조를 결정했고, 결합거리, 결합각도, 자기모멘트, 스핀밀도, 상태밀도 등을 계산함으로써 전이금속 나노선의 구조적 성질과 자기적 성질을 연구하였다. Fe-Pt 나노선의 경우에 지그재그 구조가 직선 구조보다 더 안정된 것으로 계산되었고, 직선 구조에 비해서 결합길이는 증가하지만 자기모멘트는 감소하였다.

Keywords

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