Patent ID: 8569852

Claim:
A magnetic oscillation element, comprising: a first electrode; a second electrode; a first magnetic layer provided between the first electrode and the second electrode, the first magnetic layer having a variable magnetization direction; a second magnetic layer provided between the first electrode and the first magnetic layer, the second magnetic layer having a fixed magnetization direction; and a first spacer layer being nonmagnetic and provided between the first magnetic layer and the second magnetic layer, the first magnetic layer including: a ferromagnetic fourth magnetic layer; and a ferromagnetic fifth magnetic layer contacting the first spacer layer between the fourth magnetic layer and the first spacer layer, a thickness of the first magnetic layer in a first direction connecting the first electrode and the second electrode being greater than 2 times a thickness of the fifth magnetic layer in the first direction, the thickness of the first magnetic layer being less than a maximum width of a first surface of the second electrode on the first magnetic layer side, the first magnetic layer having a first edge portion provided outside the first surface when viewed along the first direction, a width of the first edge portion in a direction perpendicular to a tangent of an edge of the first surface being not less than an exchange length of the fifth magnetic layer.