Finite Element Modeling of Writer Head Design for Shingled Recording

In this paper, finite element method (FEM) solving Maxwell's equations is used to study writer head design with side shields. A half side shielded writer is investigated due to the belief that writer designs with larger side fringing field can be accommodated in shingled recording. It was found...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2012-11, Vol.48 (11), p.3551-3554
Main Authors: Wang, Lisha, Bai, Daniel Z., Wang, James
Format: Article
Language:English
Subjects:
Barium
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Finite element methods
Finite element simulations
Magnetic heads
Magnetic noise
Magnetism
Materials science
Other topics in materials science
Perpendicular magnetic recording
Physics
recording writer heads
shingled recording
Writing
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Summary:In this paper, finite element method (FEM) solving Maxwell's equations is used to study writer head design with side shields. A half side shielded writer is investigated due to the belief that writer designs with larger side fringing field can be accommodated in shingled recording. It was found that although a half side shielded writer provides higher on track field, curvature at track edge is also increased. The increasing curvature poses a limit on the writer pole width increment. Designing a writer to maintain low curvature while obtaining high on-track field continues to be the challenge for shingled recording. This paper explores a full range of writer design parameters using finite element modeling and introduces several design features for a wrap-around shielded writer.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2012.2201141