Brinks Hofer Gilson & Lione
Magnetic sensing device with multilayered pinned magnetic layer having magnetostriction-enhancing layer
A magnetic sensing device is presented that has a multilayer material with a pinned magnetic layer, a nonmagnetic material layer, and a free magnetic layer. The pinned magnetic layer is a composite with a nonmagnetic intermediate layer and magnetic thin-film layers separated from each other by the nonmagnetic intermediate layer. A first nonmagnetic magnetostriction-enhancing layer is on the pinned magnetic layer and contacts a first thin-film layer placed farthest from the nonmagnetic material layer. At least one of the magnetic thin-film layers has a composite structure with a second nonmagnetic magnetostriction-enhancing layer and magnetic layers separated from each other by the second magnetostriction-enhancing layer. All of the magnetic layers are magnetized in the same direction antiparallel to the adjacent magnetic thin-film layer. At least some crystals of the first and second magnetostriction-enhancing layers and the first thin-film layer/magnetic layers are epitaxial or heteroepitaxial.
Alps Electric Co., Ltd.
B B G G G
B82Y B82Y G11B G01R G11B
inventional inventional inventional inventional additional
Naoya Masamichi Eiji
Hasegawa Saito Umetsu