Recording Performance Analysis of Pre-patterned-deposition Bit Patterned Media through Micromagnetic Simulation

Deposition of magnetic material onto pre-patterned disks is a promising choice for Bit Patterned Media (BPM) fabrication. Nevertheless, understanding the relationship between recording characteristics and the patterning parameters is still lacking. In this article, we present a theoretical study on...

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Bibliographic Details
Published in2010 International Conference on Parallel and Distributed Computing, Applications and Technologies pp. 470 - 473
Main Authors Shu Xu, Jie Liu, Jincai Chen, Gongye Zhou
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2010
Subjects
BPM
island fill factor
Magnetic heads
Magnetic recording
Magnetization
Media
Micromagnetics
pillar height
pre-patterned
Signal to noise ratio
SNR
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Summary:Deposition of magnetic material onto pre-patterned disks is a promising choice for Bit Patterned Media (BPM) fabrication. Nevertheless, understanding the relationship between recording characteristics and the patterning parameters is still lacking. In this article, we present a theoretical study on the recording and noise properties of the BPM made from pre-patterned substrates through micro magnetic simulation, and propose a new Signal-to-Noise Ratio (SNR) simulating method, which can avoid the complicated calculation of recording signal sensed in GMR head. The dependence of SNR on the lattice geometry, such as dot size, spacing, pillar height and head-media spacing are carefully simulated and discussed. Finally, based on all the simulation, we conclude that 0.5~0.7 is preferred for island fill factor in practical preparation to keep high SNR, and decreasing the head-media spacing is another effective way to improve SNR, especially in the tall pillar situation.
ISBN:142449110X
9781424491100
ISSN:2379-5352
DOI:10.1109/PDCAT.2010.66