Patent ID: 9202545
Filing Date: 2015-12-01
Classification: G11C,H01F,H01L

Abstract:
1. A magnetoresistance effect element, comprising: a fixed layer including a first ferromagnetic layer of a magnetization direction invariable in a direction perpendicular to a film surface; a second ferromagnetic layer of a magnetization direction variable in the direction perpendicular to the film surface; a first non-magnetic layer adjacent to the second ferromagnetic layer; a non-magnetic coupling layer adjacent to a surface of the second ferromagnetic layer on a side opposite the first non-magnetic layer; a third ferromagnetic layer of a magnetization direction variable in the direction perpendicular to the film surface adjacent to a surface of the non-magnetic coupling layer on a side opposite the second ferromagnetic layer; and a second non-magnetic layer adjacent to a surface of the third ferromagnetic layer on a side opposite the non-magnetic coupling layer, wherein the second and third ferromagnetic layers each include at least one of Fe, Co and Ni and include at least one of B, C, N, O, F, Si, Al, P and S in order to place each of the second and third ferromagnetic layers in an amorphous condition immediately after thin film deposition thereof, the second and third ferromagnetic layers have the same magnetization direction, and a total of the respective thicknesses of the second and third ferromagnetic layers is 2 nm or more, and the non-magnetic coupling layer has a thickness of 0.3 nm or more and less than 1.0 nm.