Cart (Loading....) | Create Account
Close category search window
 

Phase lag in the high-frequency response of thin-film recording heads

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Shi, X. ; Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA ; Kryder, M.H.

The phase lag introduced by a head in the writing process was measured with a scanning Kerr effect microscope. The phase lag of thin-film heads increases rapidly with frequency even below 30 MHz. A 20° phase lag at about 20 MHz was observed on both an IBM 3380 eight-turn and a 3390 31-turn head. By studying the phase lag caused by different damping mechanisms in the magnetization processes, it was concluded that the rapid increase in phase lag below 20 MHz is primarily caused by the damping of domain wall motion in the sloped region. Different designs of the sloped region of the heads were shown to cause large differences on the phase lag. The effect of drive current amplitude on the phase lag was studied both experimentally and theoretically. The results indicate that, when eddy current damping dominates and the surface of a magnetic film is driven to saturation, a larger phase lag occurs when larger drive field is applied

Published in:

Magnetics, IEEE Transactions on  (Volume:29 ,  Issue: 6 )

Date of Publication:

Nov 1993

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.