Patent ID: 6319544
Filing Date: 2001-11-20
Classification: B82Y,G11B,H01F

Abstract:
A method of manufacturing a magnetoresistive effect sensor with a giant magnetoresistive effect multi-layered sensing structure having at least an anti-ferromagnetic layer and a ferromagnetic layer that is to be exchange-coupled with said anti-ferromagnetic layer, said method comprising the steps of:depositing the ferromagnetic layer of said multi-layered sensing structure;depositing on said ferromagnetic layer, the anti-ferromagnetic layer of said multi-layered sensing structure to have a larger thickness than a target thickness;ordering said deposited anti-ferromagnetic layer; andthinning said ordered deposited anti-ferromagnetic layer over a whole region where the anti-ferromagnetic layer contacts to said ferromagnetic layer, to have the target thickness, such that a magnetic exchange coupling between the anti-ferromagnetic layer and the ferromagnetic layer remains.