Patent ID: 9058885
Filing Date: 2015-06-16
Classification: G11C,H01F,H01L

Abstract:
1. A magnetoresistive device comprising: a fixed magnetic layer structure having a fixed magnetization orientation; a first free magnetic layer structure having a variable magnetization orientation; and a second free magnetic layer structure having a variable magnetization orientation, wherein the fixed magnetic layer structure is arranged in between the first free magnetic layer structure and the second free magnetic layer structure, wherein the magnetization orientation of the first free magnetic layer structure is variable in response to a first electrical signal of a first polarity and the magnetization orientation of the second free magnetic layer structure is at least substantially non-variable in response to the first electrical signal, wherein the magnetization orientation of the first free magnetic layer structure is variable from a first direction to a second direction different from the first direction in response to the first electrical signal having a first magnitude, and the magnetization orientation of the first free magnetic layer structure is variable from the second direction to the first direction in response to the first electrical signal having a second magnitude different from the first magnitude, and wherein the magnetization orientation of the second free magnetic layer structure is variable in response to a second electrical signal of a second polarity and the magnetization orientation of the first free magnetic layer structure is at least substantially non-variable in response to the second electrical signal, wherein the second polarity is opposite to the first polarity.