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US Patent 11545175 Writer with laterally graded spin layer MsT

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Is a

Patent attributes

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

Date of Patent

January 3, 2023

Patent Application Number

17691869

Date Filed

March 10, 2022

Patent Citations

US Patent 10037772 Low magnetic flux density interface layer for spin torque oscillator

US Patent 10325618 Perpendicular magnetic recording (PMR) writer with one or more spin flipping elements in the gap

US Patent 10446178 Writer with recessed spin flipping element in the write gap

US Patent 10714129 Writer with recessed spin flipping element in the main pole surrounding gap

US Patent 10490216 Magnetic flux guiding device with antiferromagnetically coupled (AFC) oscillator in assisted writing application

US Patent 11295768 Writer with laterally graded spin layer MsT

US Patent 10032469 Perpendicular magnetic recording (PMR) writer with improved trailing shield design

US Patent 10032470 Magnetic recording head with spin torque oscillator, head gimbal assembly and magnetic recording apparatus

Patent Primary Examiner

Craig A. Renner

A method of forming a spin transfer torque reversal assisted magnetic recording (STRAMR) writer is disclosed wherein a spin torque oscillator (STO) has a flux guiding layer (FGL) wherein magnetization flips to a direction substantially opposing the write gap (WG) field when sufficient current (I

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