Title :
Fabrication and magnetic studies of (Co, Zn)-doped γ-Fe2 O3 thin films
Author :
Kuo, P.C. ; Yao, Y.D. ; Chen, J.W. ; Lin, C.H. ; Lo, Y.Y. ; Huang, J.H.
Author_Institution :
Inst. of Mater. Sci. & Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
11/1/1994 12:00:00 AM
Abstract :
A fabrication process for the sputtered (Co, Zn)-doped γ-Fe 2O3 thin films with quite a short reduction time (10 minutes) at temperature between 350-370°C and with oxidation time about 20 minutes at temperature between 310-330°C has been established. It has been observed that, with a few percent of Co and Zn content, the Zn dopant has the effect of producing higher saturation magnetization and better thermal stability of coercivity, as well as better suppressing grain growth effect during the heat treatments when these films are compared to γ-Fe2O3 thin films doped with Co only
Keywords :
cobalt; coercive force; ferromagnetic materials; grain growth; heat treatment; magnetic disc storage; magnetic thin film devices; magnetic thin films; sputter deposition; sputtered coatings; zinc; γ-Fe2O3:Co,Zn; 10 min; 20 min; 310 to 330 degC; 350 to 370 degC; Fe2O3:Co,Zn; coercivity; fabrication process; grain growth effect; heat treatments; magnetic disk storage; oxidation time; saturation magnetization; sputtered thin films; thermal stability; Coercive force; Fabrication; Heat treatment; Oxidation; Saturation magnetization; Sputtering; Temperature; Thermal stability; Transistors; Zinc;
Journal_Title :
Magnetics, IEEE Transactions on
