Invention Grant
- Patent Title: Spin transfer torque (STT) device with multilayer seed layers for magnetic recording and memory
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Application No.: US16277835Application Date: 2019-02-15
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Publication No.: US10734013B2Publication Date: 2020-08-04
- Inventor: Zheng Gao , Masahiko Hashimoto , Susumu Okamura , James Mac Freitag
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA San Jose
- Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
- Current Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
- Current Assignee Address: US CA San Jose
- Agency: Patterson & Sheridan, LLP
- Agent Steven H. Versteeg
- Main IPC: G11B5/31
- IPC: G11B5/31 ; G11B5/33 ; H01L27/22 ; H01L43/02 ; G11B5/115 ; G11B5/147 ; G11B5/39 ; G11B5/23 ; G11B5/235

Abstract:
Spin transfer torque (STT) devices with multilayer seed layers that can be used in magnetic recording and memory are provided. One such STT device includes a substrate, and a stack of layers formed on the substrate, where the stack includes a first seed layer directly on the substrate and including Cr, a second seed layer on the first seed layer and including Ta, a ferromagnetic free layer on the second seed layer; a ferromagnetic polarizing layer, and a nonmagnetic spacer layer between the free layer and the polarizing layer. One such method includes fabricating the STT device.
Public/Granted literature
- US20190259412A1 SPIN TRANSFER TORQUE (STT) DEVICE WITH MULTILAYER SEED LAYERS FOR MAGNETIC RECORDING AND MEMORY Public/Granted day:2019-08-22
Information query
IPC分类: