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US Patent 10553787 Precessional spin current structure for MRAM

Patent 10553787 was granted and assigned to Spin Memory on February, 2020 by the United States Patent and Trademark Office.

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Patent Applicant

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Current Assignee

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Mustafa Michael Pinarbasi0

Bartlomiej Adam Kardasz0

Michail Tzoufras0

Date of Patent

February 4, 2020

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Patent Application Number

160277390

Date Filed

July 5, 2018

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Patent Citations

US Patent 10236048 AC current write-assist in orthogonal STT-MRAM

US Patent 10236439 Switching and stability control for perpendicular magnetic tunnel junction device

US Patent 10360961 AC current pre-charge write-assist in orthogonal STT-MRAM

US Patent 10270027 Self-generating AC current assist in orthogonal STT-MRAM

US Patent 10008248 Circuits and devices based on enhanced spin hall effect for efficient spin transfer torque

US Patent 10026892 Precessional spin current structure for MRAM

US Patent 10032978 MRAM with reduced stray magnetic fields

US Patent 10229724 Microwave write-assist in series-interconnected orthogonal STT-MRAM devices

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Patent Primary Examiner

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Patent abstract

A magnetoresistive random-access memory (MRAM) is disclosed. MRAM device has a magnetic tunnel junction stack having a significantly improved performance of the free layer in the magnetic tunnel junction structure. The MRAM device utilizes a precessional spin current (PSC) magnetic layer in conjunction with a perpendicular MTJ where the in-plane magnetization direction of the PSC magnetic layer is free to rotate.

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