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Abstract

A method of manufacturing a magnetoresistive effect element includes forming a first electrode above a substrate, forming a metal layer of a metal material above the first electrode, forming a first magnetic layer above the metal layer, forming a tunnel insulating film above the first magnetic layer, forming a second magnetic layer above the tunnel insulating film, forming a second electrode layer above the second magnetic layer, patterning the second electrode layer, patterning the second magnetic layer, the tunnel insulating film, the first magnetic layer and the metal layer, while depositing sputtered particles of the metal film on side walls of the second magnetic layer, the tunnel insulating film, the first magnetic layer and the metal layer to form a sidewall metal layer, and oxidizing the sidewall metal layer to form an insulative sidewall metal oxide layer.

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First Claim