Invention Grant
- Patent Title: Magnetic memory device and method for controlling a write pulse
-
Application No.: US16603343Application Date: 2018-04-04
-
Publication No.: US11031062B2Publication Date: 2021-06-08
- Inventor: Yoichi Shiota , Takayuki Nozaki , Shinji Yuasa
- Applicant: National Institute of Advanced Industrial Science and Technology
- Applicant Address: JP Chiyoda-ku
- Assignee: National Institute of Advanced Industrial Science and Technology
- Current Assignee: National Institute of Advanced Industrial Science and Technology
- Current Assignee Address: JP Chiyoda-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JPJP2017-090382 20170428
- International Application: PCT/JP2018/014417 WO 20180404
- International Announcement: WO2018/198696 WO 20181101
- Main IPC: G11C11/16
- IPC: G11C11/16 ; H01L43/02 ; H01F10/32 ; H01L43/10

Abstract:
According to one embodiment, a magnetic memory device includes a stacked body and a controller. The stacked body includes a first conductive layer, a second conductive layer, a first magnetic layer provided between the first conductive layer and the second conductive layer, a second magnetic layer provided between the first magnetic layer and the second conductive layer, and a nonmagnetic layer provided between the first magnetic layer and the second magnetic layer. A resistance value per unit area of the nonmagnetic layer exceeds 20 Ωμm2. The controller is electrically connected to the first conductive layer and the second conductive layer, and supplies a write pulse to the stacked body in a first operation. The write pulse includes a rise period, a potential of the write pulse changing from a first potential toward a second potential in the rise period, an intermediate period of the second potential after the rise period, and a fall period after the intermediate period, the potential of the write pulse changing from the second potential toward the first potential in the fall period. A duration of the fall period is longer than a duration of the rise period.
Public/Granted literature
- US20200035283A1 MAGNETIC MEMORY DEVICE AND METHOD FOR CONTROLLING SAME Public/Granted day:2020-01-30
Information query