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High magnetization exchange-couple double-layer TbFeCo for magnetic flux reading optical recording

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4 Author(s)
Lin, Chao-Cheng ; Dept. of Mater. Sci. & Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan ; Lai, Chih-Huang ; Chen, B.M. ; Shieh, Han-Ping D.

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

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Magnetics, IEEE Transactions on  (Volume:37 ,  Issue: 4 )