Patent ID: 6258283
Filing Date: 2001-07-10
Classification: B82Y,G01R,G11B,H01L,Y10T

Abstract:
A method of making a magnetic resistance element, comprising the steps of:forming a first magnetizable layer, a non-magnetizable layer and a second magnetizable layer, in this order, on an insulating layer;providing a resist layer for forming a main part of said magnetic resistance element on said second magnetizable layer;etching side faces of said first magnetizable layer, said non-magnetizable layer and said second magnetizable layer into slope faces by ion milling from the second magnetizable layer slide;forming terminals on said slope faces; andremoving said resist layer,wherein a part of said first magnetizable layer which is located outside of said slope faces is left on said insulating layer when the side faces of said first magnetizable layer, said non-magnetizable layer and said second magnetizable layer are etched by ion milling,wherein said terminals are formed on said slope faces and said part of said first magnetizable layer which has been left, andwherein a thickness of said first magnetizable layer is detected by an end sensor while said first magnetizable, said non-magnetizable layer and said second magnetizable layer are etched by ion milling, whereby said first magnetizable layer having a prescribed thickness is left on said insulating layer.