Title :
A magnetization behavior of giant magnetostrictive amorphous Sm-Fe thin films
Author :
Seong, Y.H. ; Kim, K.S. ; Yu, S.C. ; Lim, S.H.
Author_Institution :
Dept. of Phys., Chung-Buk Nat. Univ., Cheongju, South Korea
fDate :
9/1/1999 12:00:00 AM
Abstract :
Amorphous Sm-Fe thin films with excellent magnetostrictive properties are fabricated by rf magnetron sputtering and a magnetization behavior of the thin films is investigated by measuring the temperature dependence of magnetization with a SQUID and a VSM during heating from 5 to 600 K at an applied magnetic field of 10 or 50 kOe, and also measuring low temperature hysteresis loops. Magnetic parameters are discussed by using models based on the mean field theory and the random anisotropy. A particular emphasis is given to differing magnetic properties depending on fabrication method
Keywords :
amorphous magnetic materials; iron alloys; magnetic anisotropy; magnetic hysteresis; magnetic thin films; magnetisation; magnetostriction; samarium alloys; soft magnetic materials; sputter deposition; sputtered coatings; 5 to 600 K; RF magnetron sputtering; Sm-Fe; applied magnetic field; fabrication method; giant magnetostrictive amorphous Sm-Fe thin films; low temperature hysteresis loops; magnetic parameters; magnetic properties; magnetization behavior; mean field theory; random anisotropy; temperature dependence; Amorphous magnetic materials; Amorphous materials; Magnetic anisotropy; Magnetic field measurement; Magnetic films; Magnetic properties; Magnetization; Magnetostriction; Perpendicular magnetic anisotropy; Sputtering;
Journal_Title :
Magnetics, IEEE Transactions on
