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Start Over Author "Li, Jianming" Journal ieee transactions on magnetics
8 results on '"Li, Jianming"'

5. HAMR Media Design in Optical and Thermal Aspects

Author

Xu, Baoxi, primary, Cen, Zhanhong, additional, Goh, Jin Hong, additional, Li, Jianming, additional, Ye, Kaidong, additional, Zhang, Jing, additional, Yang, Hongzhi, additional, Toh, Yeow Teck, additional, and Quan, Chenggen, additional

Published
2013
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8. Analysis of Heat-Assisted Magnetic Recording to Density of 4 Tb/in ^\textbf 2.

Author

Xu, Baoxi, Wang, Hongtao, Cen, Zhanhong, Liu, Zhejie, Li, Jianming, Toh, Yeow Teck, Ye, Kaidong, Zhang, Jing, and Yang, Hongzhi

Subjects
MAGNETIC recording media, HEAT treatment, FACTOR analysis, NEAR-fields, TRANSDUCERS, LANDAU-lifshitz equation
Abstract

Thermal performance of media is a key factor limiting heat-assisted magnetic recording density. In this paper, the effects of near-field optical transducer tip size on the thermal profiles of media are studied, and the results show that even with a tip size of 10 nm, the obtained cross-track thermal spot size and down-track thermal gradient still cannot meet the requirements of 4 Tb/in ^2 for continuous-wave laser heating. Pulse laser heating can improve the thermal distribution significantly, and the requirements for 4 Tb/in ^2 can be met at a pulsewidth of 100 ps. Dynamic micromagnetic recording simulation with Landau–Lifshitz–Bloch equation is conducted for pulse laser heating recording. The results indicate that 4 Tb/in ^2 density is realizable for FePt recording media. It is also pointed out that, for short-pulse laser heating recording, media with large magnetic damping constant is important. [ABSTRACT FROM AUTHOR]

Published
2014
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