J. Phys. IV France 07 (1997) C1-749-C1-750
Crystallographic and Magnetic Characteristics of Ba Ferrite Sputtered Films for High Density Magnetic Recording DisksM. Naoe, K. Noma, N. Matsushita and S. Nakagawa
Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro, Tokyo 152, Japan
Ba ferrite films with non-stoichiometric composition were deposited using Facing Targets Sputtering apparatus. The films with well c-axis orientation and remarkable perpendicular anisotropy were attained even at the substrate temperature below 600°C. Sufficiently large saturation magnetization 4πM, of 3.7 kG and small crystallite size below 20 nm were attained using the targets with Fe-excessive composition. Their good crystallographic and magnetic characteristics were thought to be satisfactory for high density magnetic recording media.
© EDP Sciences 1997