A new kind of non-linear distortion in hard disk drives

This paper introduces a form of non-linear distortion (NLD) in rotating magnetic storage. This NLD is inherent to the read back process, and is caused by a non-linear field versus amplitude response in the read element. This is different than traditional NLD inherent to the write process, or non-lin...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 2012-04, Vol.111 (7), p.07B731-07B731-3
Main Authors: Nichols, Mark A., Miladinovic, Nenad
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper introduces a form of non-linear distortion (NLD) in rotating magnetic storage. This NLD is inherent to the read back process, and is caused by a non-linear field versus amplitude response in the read element. This is different than traditional NLD inherent to the write process, or non-linear "saturation" effects in the read back process. Because of these differences, standard methods of mitigating NLD performance losses do not work on magneto-resistive non-linear distortion (MR-NLD). As of today there is no method of mitigating performance losses due to MR-NLD in any shipping hard drive.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3680098