Antiferromagnetism and Atomic Disorder in Fe_2 VSi (Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

元データ 2004-02-15 社団法人日本物理学会

概要

To expand our knowledge of Fe_2VSi, band calculations (LMTO-ASA) have been performed for paramagnetic (P), ferromagnetic (F) and antiferromagnetic (AF) orderings. The total-energy results show the following facts : AF is the most stable among those orderings ; The deformation from cubic to tetragonal structures contributes to the stabilization of AF. These facts were also investigated in terms of "band energy" estimated from DOS. Concerning magnetic moments, those on Fe atoms are slightly enhanced from F to AF. The result for (Fe_<15/16>V_<1/16>)_2(V_<7/8>Fe_<1/8>)Si indicates the possibility of the existence of Fe atoms with large magnetic moments due to the atomic disorder between Fe and V atoms.

著者

FUJII Shinpei Department of Physics, Faculty of Science, Kagoshima University
ISHIDA Shoji Department of Physics, Faculty of Science, Kagoshima University
ASANO Setsuro Institute of Physics, College of Arts and Sciences, University of Tokyo
浅野 摂郎 東大総合文化
Ishida Shoji Department Of Physics Faculty Of Science Kagoshima University
Fujii Shinpei Department Of Physics Faculty Of Science Kagoshima University
Asano Setsuro Institute For Solid State Physics The University Of Tokyo
Asano Setsuro The Graduate School Of/college Of Arts And Sciences The University Of Tokyo
Asano Setsuro Institute Of Physics College Of Arts And Sciences University Of Tokyo
Ishida Shuichi Division Of Cardiovascular Medicine Department Of Internal Medicine Ohmori Hospital Toho University
浅野 攝郎 東大総合文化
Ishida S Department Of Physics Faculty Of Science Kagoshima University
Fujii S Department Of Physics Faculty Of Science Kagoshima University

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