Perpendicular STT Oscillator Chia-Ling Chien, Johns Hopkins University, DMR 0520491
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Perpendicular STT Oscillator Chia-Ling Chien, Johns Hopkins University, DMR 0520491 Background Spin transfer torque (STT) oscillator with perpendicularly magnetized electrodes offers much superior performance characteristics comparing to in-plane STT oscillators. This Work (Scientific and Technological Interests) We have fabricated a STT device with perpendicularly magnetized electrodes made of Co/Pt multilayer and demonstrated STT driven magnetization switching. We are in the process of integrating a in- plane GMR reader with the perpendicular STT oscillator so that oscillation can be directly detected as voltage signal. J.-H. Park, M. Moneck, C. Park, and J.-G. Zhu, Journal of Applied Physics, in press. GMR and STT Switching Measurements Co Pt Fcc (111) textured Co/Pt multilayer Co Co/Pt Co/Pt Analyzer Cu spacer Oscillating layer Cu spacer Polarizing layer Perpendicular STT Oscillator Spin-torque-transfer switching: Device in fabrication Perpendicular STT Device
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Co. Pt. Co. Fcc (111) textured Co/Pt multilayer. Perpendicular STT Oscillator Chia-Ling Chien, Johns Hopkins University, DMR 0520491. Background - PowerPoint PPT Presentation
Transcript of Perpendicular STT Oscillator Chia-Ling Chien, Johns Hopkins University, DMR 0520491
Perpendicular STT Oscillator Chia-Ling Chien, Johns Hopkins University, DMR 0520491
BackgroundSpin transfer torque (STT) oscillator with perpendicularly magnetized electrodes offers much superior performance characteristics comparing to in-plane STT oscillators.This Work (Scientific and Technological Interests)We have fabricated a STT device with perpendicularly magnetized electrodes made of Co/Pt multilayer and demonstrated STT driven magnetization switching. We are in the process of integrating a in-plane GMR reader with the perpendicular STT oscillator so that oscillation can be directly detected as voltage signal.
J.-H. Park, M. Moneck, C. Park, and J.-G. Zhu, Journal of Applied Physics, in press.
GMR and STT Switching Measurements
Co
Pt
Fcc (111) textured Co/Pt multilayer
Co
Co/Pt
Co/Pt
Analyzer
Cu spacer
Oscillating layer
Cu spacer
Polarizing layer
Perpendicular STT OscillatorSpin-torque-transfer switching:
Device in fabrication
Perpendicular STT Device
