Patent ID: 8378437
Filing Date: 2013-02-19
Classification: B82Y,G11C,H01F,H01L

Abstract:
1. A magnetoresistive effect element comprising: a reference layer having an invariable magnetization which is perpendicular to a top surface of the reference layer; a recording layer having a variable magnetization which is perpendicular to the top surface of the reference layer; the top surface of the recording layer is parallel to the top surface of the reference layer; and a nonmagnetic layer formed between the reference layer and the recording layer, wherein the recording layer is made of a magnetic alloy containing at least one element of Fe, Co, and Ni and at least one element of Pt and Pd, and the magnetoresistive effect element has an element diameter D that satisfies the following expressions i and ii: where Ms is a saturation magnetization of a magnetic material of the recording layer, Ku is a magnetic anisotropy constant of the magnetic material of the recording layer, A is an exchange stiffness coefficient, t is a film thickness of the recording layer, μ