TY - JOUR
T1 - Study on static and high frequency magnetic properties of various thick Fe100-xGaxpolycrystalline films (x=18.5, 24.9, and 33.4)
AU - Endo, Yasushi
AU - Kawabe, Yasuyuki
AU - Miyazaki, Takamichi
N1 - Funding Information:
This work was supported in part by JSPS KAKENHI Grant Number JP17H03226. This work was supported in part by CIES collaborative research from CIES, Tohoku University. This work was also supported in part by CSRN and CSIS, Tohoku University. This work was also supported in part by Advanced Storage Research Consortium (ASRC) in Japan.
Publisher Copyright:
© 2021 The Institute of Electrical Engineers of Japan.
PY - 2021/2/1
Y1 - 2021/2/1
N2 - This paper describes static and high frequency magnetic properties of Fe100-xGax polycrystalline films (x = 18.5, 24.9, and 33.4) with various thickness between 5-100 nm. The saturation magnetostriction (λs) for each x become lower than those of Fe-Ga single crystal films and Fe-Ga bulk alloy regardless of the film thickness, which may be attributed to the crystalline orientation in these films. On the other hand, for every x, the relationship between the in-plane effective damping constant (α//) and the film thickness is almost same. Their values become higher than those of other Fe-binary alloy thin film with soft magnetic properties, which may be attributed to the coexistence of both intrinsic and extrinsic damping. These results suggest that the reduction of α// is one of the most important for the high-frequency device applications of Fe100-xGax polycrystalline films with various film thickness.
AB - This paper describes static and high frequency magnetic properties of Fe100-xGax polycrystalline films (x = 18.5, 24.9, and 33.4) with various thickness between 5-100 nm. The saturation magnetostriction (λs) for each x become lower than those of Fe-Ga single crystal films and Fe-Ga bulk alloy regardless of the film thickness, which may be attributed to the crystalline orientation in these films. On the other hand, for every x, the relationship between the in-plane effective damping constant (α//) and the film thickness is almost same. Their values become higher than those of other Fe-binary alloy thin film with soft magnetic properties, which may be attributed to the coexistence of both intrinsic and extrinsic damping. These results suggest that the reduction of α// is one of the most important for the high-frequency device applications of Fe100-xGax polycrystalline films with various film thickness.
KW - Fe-Ga thin film
KW - In-plane effective damping constant
KW - Saturation magnetostriction
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U2 - 10.1541/ieejfms.141.118
DO - 10.1541/ieejfms.141.118
M3 - Article
AN - SCOPUS:85100267704
SN - 0385-4205
VL - 141
SP - 118
EP - 122
JO - IEEJ Transactions on Fundamentals and Materials
JF - IEEJ Transactions on Fundamentals and Materials
IS - 2
ER -