Patent ID: 8553372
Filing Date: 2013-10-08
Classification: G11B,H01F,H01L,H03B

Abstract:
1. A magnetic oscillator comprising: a layered film comprising a first ferromagnetic layer, an insulating layer stacked on the first ferromagnetic layer, and a second ferromagnetic layer stacked on the insulating layer; and a pair of electrodes configured to apply a current to the layered film in a direction perpendicular to a film surface of the layered film; wherein regions having different resistance area products are provided between the first ferromagnetic layer and the second ferromagnetic layer, wherein each of the first ferromagnetic layer, the insulating layer, the second ferromagnetic layer has a cross sectional shape taken along a plane perpendicular to a stacking direction, the cross sectional shape being tapered toward an end part, and the insulating layer is provided with a leak path in the end part, the leak path having a smaller resistance area product than a resistance area product of the insulating layer.