The Energy Systems Research Laboratory presents
LLG Micromagnetic Analysis of Perpendicular Recording Heads – Write Head and Spin-Transfer Torque Oscillator in Microwave-Assisted Magnetic Recording
Invited Lecture by
Date: Aug 09, 2016
Time: 11:00 AM– 12:00 PM
Address: Department of Electrical and Computer Engineering Department, Florida International University, 10555 W. Flagler Street, Miami, Florida 33174
Abstract: Microwave-assisted magnetic recording (MAMR) is one candidate scheme for next-generation perpendicular magnetic recording and is considered to bridge the gap between current perpendicular magnetic recording (PMR, shingled recording etc.) and heat assisted magnetic recording (HAMR).We will present spin-transfer torque oscillator (STO) and head configurations that will allow the STO element to operate at a low injected current density for higher reliability. The main points are: 1) Reducing the interaction between the head and STO lowers the injected current, 2) A tilted main pole – trailing shield gap model has a lower injected current compared with the perpendicular gap head, 3) A low anisotropy field (Hk) spin injection layer (SIL) is promising for utilizing both reflection/transmission torques, and 4) Media recording simulations are carried out to determine how the optimized head + STO performs.
Short Bio: Dr Yasushi Kanai is a Professor of the Information and Electronics Engineering Department at Niigita Institute of Technology, Kashiwazaki, Japan. He has authored and co-authored more than 140 peer-reviewed journal papers, more than 180 international and more than 190 national conference records. He specializes in micromagnetic analysis, both in perpendicular magnetic recording heads and media, and electromagnetic field- heat transfer coupled computations of hyperthermic treatment.
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