By Topic

Electromigration in Giant Magnetoresistance Spin Valve Read Sensors Under Pulsed DC Magnetic Field: An Analytical and Numerical Study

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.

The purchase and pricing options are temporarily unavailable. Please try again later.
4 Author(s)
Ding Gui Zeng ; Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore ; Kyoung-il Lee ; Kyung-won Chung ; Seongtae Bae

A theoretical model is proposed to investigate the electromigration (EM) behavior in giant magnetoresistance spin valve (GMR SV) read sensors under pulsed direct current (dc) magnetic field during sensor operation. It was found that the externally applied magnetic field gives rise to a more severe Joule heating and consequently raises the device temperature leading to EM acceleration. Black's equation was modified based on Green's function method and the Boltzmann equation to more precisely interpret the EM mean time to failure (MTTF) of GMR SV read sensors under pulsed dc magnetic field. The physical validity of this proposed model was confirmed by the comparisons with experimental results.

Published in:

Magnetics, IEEE Transactions on  (Volume:49 ,  Issue: 2 )