TY - JOUR
T1 - Origin of strong magnetic anisotropy in L10-FeNi probed by angular-dependent magnetic circular dichroism
AU - Kotsugi, Masato
AU - Mizuguchi, Masaki
AU - Sekiya, Shigeki
AU - Mizumaki, Masaichiro
AU - Kojima, Takayuki
AU - Nakamura, Tetsuya
AU - Osawa, Hitoshi
AU - Kodama, Kenji
AU - Ohtsuki, Takumi
AU - Ohkochi, Takuo
AU - Takanashi, Koki
AU - Watanabe, Yoshio
N1 - Funding Information:
This work was partially supported in part by a Grant-in-Aid for Scientific Research (Young scientist (B) 17740198 , 19740210 ) and a Grant-in-Aid for Scientific Research in Priority Area “Creation and control of spin current” and by a grant from the Global COE program “Materials Integration International Center of Education Research” from the Ministry of Education, Culture, Sports, Science and Technology, Japan . The MCD experiment was carried out under the approval of SPring-8 (Proposals: 2007B1258 and 2008A2056 ). The MCD analysis was supported by Industry-Academia Collaborative R&D Programs of Japan Science and Technology Agency.
PY - 2013/1
Y1 - 2013/1
N2 - We investigated the origin of strong magnetic anisotropy energy (MAE) in L10-type ordered FeNi phase by angular-dependent magnetic circular dichroism. Our findings showed that the orbital magnetic moment of Fe has a significant angular dependence that exhibits a maximum value at the [001] direction corresponding perpendicular to the plane. The calculated uniaxial anisotropy energy when considering spin-orbit (SO) interaction shows quantitatively good agreement with the volume MAE. We concluded that the orbital anisotropy in 3d Fe electrons results in the strong MAE in L10-FeNi and ascribe this to the spin-orbit interaction via structural ordering.
AB - We investigated the origin of strong magnetic anisotropy energy (MAE) in L10-type ordered FeNi phase by angular-dependent magnetic circular dichroism. Our findings showed that the orbital magnetic moment of Fe has a significant angular dependence that exhibits a maximum value at the [001] direction corresponding perpendicular to the plane. The calculated uniaxial anisotropy energy when considering spin-orbit (SO) interaction shows quantitatively good agreement with the volume MAE. We concluded that the orbital anisotropy in 3d Fe electrons results in the strong MAE in L10-FeNi and ascribe this to the spin-orbit interaction via structural ordering.
KW - Iron meteorite
KW - L1-FeNi
KW - Magnetic anisotropy
KW - Magnetic circular dichroism
KW - Spin-orbit interaction
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U2 - 10.1016/j.jmmm.2012.09.008
DO - 10.1016/j.jmmm.2012.09.008
M3 - Article
AN - SCOPUS:84868674848
SN - 0304-8853
VL - 326
SP - 235
EP - 239
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
ER -