Title :
High magnetization exchange-couple double-layer TbFeCo for magnetic flux reading optical recording
Author :
Lin, Chao-Cheng ; Lai, Chih-Huang ; Chen, B.M. ; Shieh, Han-Ping D.
Author_Institution :
Dept. of Mater. Sci. & Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
fDate :
7/1/2001 12:00:00 AM
Abstract :
High magnetization (Mr) and enhanced coercivity magneto-optical (MO) recording media TbFeCo (TFC) were investigated for hybrid magnetic flux reading/optical recording due to their large magnetic flux. To increase the stability of high Mr TFC media, dual-layer disks composed of TM-rich readout layer with saturation magnetization (MS)=370 emu/cm 3 and RE-rich memory layer were fabricated. Coercivity and interface energy between double layers as a function of active layer thickness were examined. By simulating thermo-magnetic writing, the dual-layer media were shown to be applicable for optical writing/magnetic flux reading recording
Keywords :
cobalt alloys; coercive force; exchange interactions (electron); ferromagnetic materials; iron alloys; magnetic multilayers; magneto-optical recording; terbium alloys; TbFeCo; active layer thickness; coercivity; dual-layer disks; exchange-couple double-layer media; hybrid magnetic flux reading/optical recording; interface energy; magneto-optical recording media; saturation magnetization; thermo-magnetic writing; Coercive force; Disk recording; Magnetic flux; Magnetic recording; Magnetooptic recording; Optical recording; Optical saturation; Saturation magnetization; Stability; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
