Patent ID: 9007055
Filing Date: 2015-04-14
Classification: B82Y,G01R,H01F,H01L,Y10T

Abstract:
1. A self-pinned spin valve magnetoresistance effect film comprising a ground layer, a pinned layer, an intermediate layer, a free layer, and a protection layer sequentially layered over a non-magnetic substrate, wherein a non-magnetic layer is formed between the ground layer and the pinned layer, a thickness of the non-magnetic layer is greater than or equal to 3 Å, and less than 5 Å, a coercive force of a ferromagnetic layer of the pinned layer on a side near the ground layer is greater than or equal to 12 (KA/m), and a ratio MR160/MRmax between a maximum change in resistance MRmax in a range of an applied external magnetic field of ±160 (kA/m) and a change in resistance MR160 when an external magnetic field of 160 (kA/m) is applied in an MR-H curve representing the relationship between the change in resistance MR and the external magnetic field H, is greater than or equal to 95%.