Patent ID: 9698340
Date: 2017-07-04
CPC Classifications: G11C,H01L

Claim:
1. A magnetic memory comprising a memory cell array in which magnetic memory elements are disposed in an array, each of the magnetic memory elements comprising: a first magnetic layer; a second magnetic layer; a nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer; an electrode disposed on a side surface of the first magnetic layer; and a first insulation layer disposed between the first magnetic layer and the electrode, wherein the magnetic memory elements in the memory cell array comprise a first magnetic memory element and a second magnetic memory element, a dielectric constant at a first position in the first magnetic memory element is higher than a dielectric constant at a second position in the first magnetic memory element, and a dielectric constant at a third position in the second magnetic memory element is higher than a dielectric constant at a fourth position in the second magnetic memory element, when an electric field occurs by applying a voltage between the first magnetic layer and the electrode, the first position is a position of crossing between the first insulation layer and a line segment having a first angle to a straight line connecting a first center point of the first magnetic memory element and a second center point of the second magnetic memory element, the line segment connecting the first center point and a first peripheral portion of the first magnetic memory element, the second position is a position of crossing between the first insulation layer and a line segment having a second angle to the straight line, which is different from the first angle, and connecting the first center point and a second peripheral portion of the first magnetic memory element, the third position is a position of crossing between the first insulation layer and a line segment having the first angle to the straight line, and connecting the second center point and a third peripheral portion of the second magnetic memory element, and the fourth position is a position of crossing between the first insulation layer and a line segment having the second angle to the straight line, and connecting the second center point and a fourth peripheral portion of the second magnetic memory element.