TY - JOUR
T1 - Temperature Dependence of Magnetocrystalline Anisotropy in Itinerant Ferromagnets
AU - Miura, Daisuke
AU - Sakuma, Akimasa
N1 - Funding Information:
Acknowledgment This work was supported by JSPS KAKENHI Grant Numbers JP17K14800, JP19H05612, and JP21K04624 in Japan.
Publisher Copyright:
© 2022 The Physical Society of Japan.
PY - 2022/2/15
Y1 - 2022/2/15
N2 - We theoretically investigated magnetocrystalline anisotropy (MA) at a finite temperature T in ferromagnetic metals. Assuming a Rashba-type ferromagnet with uniaxial MA, we defined the MA constants Ku(T) derived from several different concepts. Our purpose was to examine the equality between them and to confirm a power law between Ku(T) and magnetization M(T) in the form of Ku(T)=Ku(0) = [M(T)=M(0)]α. We demonstrate that α equals 2 in the itinerantelectron limit and increases with the localized feature of electrons passing through α = 3, predicted for the single-ion MA in spin models.
AB - We theoretically investigated magnetocrystalline anisotropy (MA) at a finite temperature T in ferromagnetic metals. Assuming a Rashba-type ferromagnet with uniaxial MA, we defined the MA constants Ku(T) derived from several different concepts. Our purpose was to examine the equality between them and to confirm a power law between Ku(T) and magnetization M(T) in the form of Ku(T)=Ku(0) = [M(T)=M(0)]α. We demonstrate that α equals 2 in the itinerantelectron limit and increases with the localized feature of electrons passing through α = 3, predicted for the single-ion MA in spin models.
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U2 - 10.7566/JPSJ.91.023706
DO - 10.7566/JPSJ.91.023706
M3 - Article
AN - SCOPUS:85124217097
SN - 0031-9015
VL - 91
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 2
M1 - 023706
ER -