Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21
Online ISSN : 2424-3086
ISSN-L : 2424-3086
2011.6
Session ID : 3326
Conference information
3326 Advanced Verification Method using Ferromagnetic Resonance on TMR Head Durability against Lapping
Hideaki TANAKATakehisa YOSHIKAWAKenichi IWATSUKAYukio MAEDA
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Abstract
Achieving a high areal density in magnetic recording systems necessitates reducing the physical dimensions of the head. However, this makes heads more susceptible to mechanical stresses generated during lapping. It is thus important to verify the durability of heads against lapping in order to achieve higher areal densities. However, it is very difficult to analyze the crystallography of potentially affected layers on the surface of a fabricated head due to its small size and because it is a part of a film stack. In this study, we develop an advanced verification method that uses ferromagnetic resonance to assess tunneling magnetoresistive (TMR) head durability against lapping.
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© 2011 The Japan Society of Mechanical Engineers
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