The Determination of Flash Temperature in Intermittent Magnetic Head/Disk Contacts Using Magnetoresistive Heads: Part I—Model and Laser Simulation

[+] Author and Article Information
Yufeng Li, Aric R. Kumaran

Seagate Technology, Bloomington, MN 55420

J. Tribol 115(1), 170-178 (Jan 01, 1993) (9 pages) doi:10.1115/1.2920972 History: Received February 24, 1992; Revised July 01, 1992; Online June 05, 2008


The feasibility of using a magnetoresistive magnetic head to determine the flash temperature of intermittent magnetic head/disk contacts is investigated. A finite difference model is developed to study the effects of the magnetoresistive sensor height, the contact power intensity and the contact duration on the temperature response characteristics of the magnetoresistive sensor. A pulsed neody-minum:yttrium-aluminum-garnet laser is used as the heat source to simulate the contact and verify the model. The simulation results agree well with the theoretical model. Based on the theoretical model and laser simulation, a temperature sensitivity coefficient ζ is proposed to determine the surface temperature rise.

Copyright © 1993 by The American Society of Mechanical Engineers
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