Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.3463380
Title: Numerical simulation of current density induced magnetic failure for giant magnetoresistance spin valve read sensors
Authors: Zeng, D.G.
Chung, K.-W.
Judy, J.H.
Bae, S. 
Issue Date: 15-Jul-2010
Citation: Zeng, D.G., Chung, K.-W., Judy, J.H., Bae, S. (2010-07-15). Numerical simulation of current density induced magnetic failure for giant magnetoresistance spin valve read sensors. Journal of Applied Physics 108 (2) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3463380
Abstract: It was numerically demonstrated that current-in-plane (CIP) and current-perpendicular-to-plane (CPP) Ir20Mn80 based giant magnetoresistance spin valve read sensors operating at an extremely high current density (J≥1×108 A/cm2) show completely different electrical and magnetic failure mechanisms: (1) CIP read sensors, electromigration-induced Cu spacer diffusion and correspondingly degraded interlayer coupling were primarily responsible for the failures; while, (2) CPP read sensors, the deterioration of exchange bias due to thermomigration-induced Mn interdiffusion at the Co80Fe20 /Ir20Mn 80 interface was found to be dominant. The different temperature and current distribution resulting in different mass-transport mechanisms are the main physical reasons for the failure. © 2010 American Institute of Physics.
Source Title: Journal of Applied Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/82792
ISSN: 00218979
DOI: 10.1063/1.3463380
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