Analysis of fatigue characteristic of sm-substituted DyFeCo magneto-optical films

Zuoyi Li; Ke Wang; Xiaofei Yang; Zhen Li; Gengqi Lin

doi:10.1117/12.510283

9 April 2003 Analysis of fatigue characteristic of sm-substituted DyFeCo magneto-optical films

Zuoyi Li, Ke Wang, Xiaofei Yang, Zhen Li, Gengqi Lin

Proceedings Volume 5060, Sixth International Symposium on Optical Storage (ISOS 2002); (2003) https://doi.org/10.1117/12.510283
Event: Sixth International Symposium on Optical Storage (ISOS 2002), 2002, Wuhan, China

Abstract

The fatigue characteristic of the amorphous Sm-substituted DyFeCo magneto-optical alloy films fabricated by R.F. magnetron sputtering method were investigated by accelerated pulse training method under the condition of magnetic field modulation plus laser pulse irradiation. The evaluation of fatigue characteristic is determined from the static magneto-optical signal readout level after several writing/erasing repetitions compared with initial level. The experimental dependence of fatigue characteristics is in good agreement with the model based on the JMA equation. Furthermore, the Avrami factor can be derived from the model. Experimental results show that it is very effective in studying the writing/erasing ability of magneto-optical films employed the method of combined the accelerated pulse training with the JMA equation and Sm-substituted HRE-TM alloys can act as a practical medium for MO storage at short wavelength.

Citation Download Citation

Zuoyi Li, Ke Wang, Xiaofei Yang, Zhen Li, and Gengqi Lin "Analysis of fatigue characteristic of sm-substituted DyFeCo magneto-optical films", Proc. SPIE 5060, Sixth International Symposium on Optical Storage (ISOS 2002), (9 April 2003); https://doi.org/10.1117/12.510283

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