Patent ID: 8675399

Claim:
A magnetic unit comprising: a magnetic pinned layer configured to be provided that a magnetization direction of the magnetic pinned layer is pinned; a first function body configured to be provided in contact with a first side of the magnetic pinned layer and perform a function with the magnetic pinned layer; and a second function body configured to be provided in contact with a second side opposite to the first side of the magnetic pinned layer, wherein the second function body is any of a nonmagnetic conductor, a nonmagnetic insulator, and a function body which performs a function with the magnetic pinned layer, wherein the magnetic pinned layer includes: a plurality of magnetic substance layers, the plurality of magnetic substance layers having a top side as to the plurality as a whole and having a bottom side as to the plurality as a whole, and at least one nonmagnetic conductive layer configured to be provided between the plurality of magnetic substance layers, wherein the at least one nonmagnetic conductive layer ferromagnetically or antiferromagnetically couples the magnetic substance layers on both the top and the bottom sides of the plurality of magnetic substance layers, wherein at least one of the at least one nonmagnetic conductive layer antiferromagnetically couples the magnetic substance layers on both the top and the bottom sides of the plurality of magnetic substance layers, wherein a total amount of magnetizations of the plurality of magnetic substance layers is approximately zero, wherein among the plurality of magnetic substance layers, a magnitude of an anisotropic magnetic field of a group of the plurality of magnetic substance layers directed toward a first direction is different from a magnitude of an anisotropic magnetic field of a different group of the plurality of magnetic substance layers directed toward a second direction opposite to the first direction, wherein a total amount of the anisotropic magnetic fields of the plurality of magnetic substance layers is not zero.