TY - JOUR
T1 - Magnetic state of Mn3CuN explored by soft x ray magnetic circular dichroism
AU - Takenaka, K.
AU - Shibayama, T.
AU - Ozawa, A.
AU - Hamada, T.
AU - Nakamura, T.
AU - Kodama, K.
AU - Kinoshita, T.
N1 - Funding Information:
We are grateful to T. Inagaki, R. Watanabe, and M. Aoyama for their help in the x ray magnetic circular dichroism measurements. The synchrotron radiation experiments were performed at the BL25SU of SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Nos. 2009A1687 and 2009B1744). This work was supported in part by the Ministry of Education, Culture, Sports, Science and Technology of Japan (Grant Nos. 19360304, 21340107, and 22360291) and by NEDO, Japan (Grant No. 08A19009d).
PY - 2011/7/15
Y1 - 2011/7/15
N2 - The tetragonally distorted antiperovskite Mn3CuN exhibits large magnetostriction of up to 2000 ppm, due to the ferromagnetic shape memory effect. Magnetocrystalline anisotropy, which is deeply involved in the magnetostriction, is investigated for Mn3CuN via quantitative evaluation of spin and orbital magnetic moments using soft x ray magnetic circular dichroism. Although Cu and Mn have finite magnetic contributions, the Cu contribution may be too small to dominate the magnetism of Mn3CuN. The orbital magnetic moment of Mn is found to be negligibly small, suggesting small magnetocrystalline anisotropy. Even with small magnetocrystalline anisotropy, the system exhibits ferromagnetic shape memory effects, presumably because the simultaneously small crystallographic anisotropy enhances the magnetic shear stress acting across the twinning plane.
AB - The tetragonally distorted antiperovskite Mn3CuN exhibits large magnetostriction of up to 2000 ppm, due to the ferromagnetic shape memory effect. Magnetocrystalline anisotropy, which is deeply involved in the magnetostriction, is investigated for Mn3CuN via quantitative evaluation of spin and orbital magnetic moments using soft x ray magnetic circular dichroism. Although Cu and Mn have finite magnetic contributions, the Cu contribution may be too small to dominate the magnetism of Mn3CuN. The orbital magnetic moment of Mn is found to be negligibly small, suggesting small magnetocrystalline anisotropy. Even with small magnetocrystalline anisotropy, the system exhibits ferromagnetic shape memory effects, presumably because the simultaneously small crystallographic anisotropy enhances the magnetic shear stress acting across the twinning plane.
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U2 - 10.1063/1.3614587
DO - 10.1063/1.3614587
M3 - Article
AN - SCOPUS:79961119553
SN - 0021-8979
VL - 110
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 2
M1 - 023909
ER -