Patent ID: 8574729

Claim:
A magnetic structure comprising: a first magnetic layer having a top surface; a nonmagnetic insulating layer having a top surface, the nonmagnetic insulating layer being adjacent to the first magnetic layer without overlapping the top surface of the first magnetic layer; a nonmagnetic adhesion layer disposed on the top surfaces of the first magnetic layer and the nonmagnetic insulating layer; and a second magnetic layer disposed on the nonmagnetic adhesion layer, the second magnetic layer being in direct contact with the nonmagnetic adhesion layer, wherein: the nonmagnetic insulating layer contains an oxygen atom; the nonmagnetic adhesion layer is composed of one element or a plurality of elements selected from the group consisting of Al, Si and nonmagnetic transition metal elements except Ru, and a bond enthalpy of a diatomic molecule composed of an atom of the one element or each of the plurality of elements and an oxygen atom is 400 kJ/mol or higher; the nonmagnetic adhesion layer has a thickness within a range of 0.3 to 0.8 nm; and the first magnetic layer and the second magnetic layer are ferromagnetically coupled to each other.