Patent ID: 8077502

Claim:
An electronic device comprising: a magnetization controlling structure; wherein the magnetization controlling structure has a first magnetic coercivity at a first temperature and a second magnetic coercivity at a second temperature higher than the first temperature; a tunnel barrier structure; and a magnetization controllable structure comprising: a first polarizing layer; and a first stabilizing layer, wherein the magnetization controllable structure has a first magnetic coercivity at the first temperature and a second magnetic coercivity at the second temperature, wherein the tunnel barrier structure is between the magnetization controlling structure and the magnetization controllable structure and the first polarizing layer is between the first stabilizing layer and the tunnel barrier structure and wherein the first magnetic coercivity of the magnetization controlling structure is higher than the first magnetic coercivity of the magnetization controllable structure and the second magnetic coercivity of the magnetization controlling structure is lower than the second magnetic coercivity of the magnetization controllable structure.