DocumentCode
1320958
Title
A Dual Free Layer Sensor With Side Shields
Author
Tuggle, Andrew ; Gider, Savas ; Mauri, Daniele ; Ho, Michael
Volume
48
Issue
11
fYear
2012
Firstpage
3547
Lastpage
3550
Abstract
We use a hybrid finite element code to explore the design space of a dual free layer (or trilayer) magnetic sensor to understand the effect of the stripe height (SH) to track width (TW) ratio on the bias point, as well as the noise. Transfer curves and noise properties are found to be strongly sensitive to the SH/TW ratio compared to a standard single free layer sensor. Side shields can change the eigenmodes of the coupled system and modify the noise cancellation.
Keywords
eigenvalues and eigenfunctions; finite element analysis; magnetic sensors; SH-TW ratio effect; bias point; dual free layer magnetic sensor; eigenmodes; hybrid finite element code; noise cancellation; side shields; standard single free layer sensor; Couplings; Magnetic noise; Magnetic separation; Magnetic shielding; Magnetostatics; Noise cancellation; Dual free layer sensor; magnetic recording; magnetic sensors; nanoscale devices; trilayer sensor;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2012.2200034
Filename
6332717
Link To Document