公开(公告)号：US11133459B2

公开(公告)日：2021-09-28

申请号：US16498936

申请日：2018-02-15

Applicant: National Institute of Advanced Industrial Science and Technology ,  TOHOKU UNIVERSITY ,  NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Takayuki Nozaki ,  Shinji Yuasa ,  Rachwal Anna Koziol ,  Masahito Tsujikawa ,  Masafumi Shirai ,  Kazuhiro Hono ,  Tadakatsu Ohkubo ,  Xiandong Xu

IPC: H01L43/10 ,  H01F10/14 ,  H01F10/30 ,  H01L27/22 ,  H01L29/82

Abstract: According to one embodiment, a magnetic element includes a first layer and a second layer. The first layer includes a first element and a second element. The first element includes at least one selected from the group consisting of Fe, Co, and Ni. The second element includes at least one selected from the group consisting of Ir and Os. The second layer is nonmagnetic.

公开(公告)号：US11107976B2

公开(公告)日：2021-08-31

申请号：US16605418

申请日：2018-06-08

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Hiroaki Sukegawa ,  Ikhtiar ,  Shinya Kasai ,  Kazuhiro Hono ,  Xiandong Xu

IPC: H01L43/02 ,  H01L27/22 ,  H01L43/10 ,  H01L43/12 ,  H01L43/08 ,  H01L21/8239 ,  G11C11/16 ,  G11B5/39 ,  H01L27/105

Abstract: According to an embodiment, a magnetic tunnel junction includes a tunnel barrier layer provided between a first magnetic layer and a second magnetic layer. The tunnel barrier layer is a crystal body made of a stacked structure of a first insulating layer and a second insulating layer. The crystal body is oriented. The first insulating layer is made of an oxide of Mg1-xXx (0≤x≤0.15). X includes at least one element selected from the group consisting of Al and Ti. The second insulating layer is made of an oxide of an alloy including at least two elements selected from the group consisting of Mg, Al, Zn, and Li. Both the first magnetic layer and the second magnetic layer are made of an alloy including B and at least one element selected from the group consisting of Co and Fe.