Influence of Spacing between Master and Slave Media on Magnetic Duplication Characteristics for Perpendicular Recording Media

Takeshi MURATA
Akihiko IZUMI
Satoshi OKAMI
Nurul Sheeda Binti SUHAIMI
Takashi KOMINE
Ryuji SUGITA

Publication
IEICE TRANSACTIONS on Electronics   Vol.E90-C    No.8    pp.1589-1593
Publication Date: 2007/08/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e90-c.8.1589
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress of High-Density Information Storage)
Category: 
Keyword: 
perpendicular recording media,  magnetic duplication,  servo writing,  spacing loss,  

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Summary: 
There are two methods of writing servo signals with high speed in a perpendicular magnetic recording medium by magnetic duplication: bit printing (BP) and edge printing (EP). In this study, the influence of spacing between master and slave media on duplication characteristics in both BP and EP has been investigated by the three-dimensional finite-element method. The results show that the duplication characteristic in each method is deteriorated with a large spacing. Also, the influence of a small spacing is stronger in BP than in EP.