Patent ID: 8982614
Filing Date: 2015-03-17
Classification: H01F,H01L

Abstract:
1. A magnetoresistive effect element comprising: a first ferromagnetic layer; a tunnel barrier provided on the first ferromagnetic layer; and a second ferromagnetic layer provided on the tunnel barrier, wherein the tunnel barrier includes a nonmagnetic mixture containing MgO and a metal oxide with a composition which forms, in a solid phase, a single phase with MgO, and wherein the nonmagnetic mixture is (a) MgTiO having a Ti/(Mg +Ti) concentration of more than 0 and 32 mol % or less, (b) MgMnO having an Mn/(Mg +Mn) concentration of more than 0 and 33 mol % or less, or (c) MgZnO having a Zn/(Mg +Zn) concentration of more than 0 and 44 mol % or less.