Boundary Pinning Effects on the Frequency Spectra of Point-Contact Spin-Torque Oscillators

Micromagnetic simulation is used to investigate the frequency spectra of a perpendicularly magnetized nanocontact spin-torque oscillator subject to different boundary pinning conditions. Boundary confinement is critical to the output spectra: spectra under two limiting conditions are attributed to t...

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Bibliographic Details
Published inIEEE magnetics letters Vol. 9; pp. 1 - 4
Main Authors Congpeng Zhao, Xingqiao Ma, Houbing Huang, Yanan Zhao, Deshan Liang, Jafri, Hasnain Mehdi, Zhuhong Liu
Format Journal Article
LanguageEnglish
Published IEEE 2018
Subjects
boundary pinning
Magnetic confinement
Magnetic tunneling
micromagnetic simulation
Oscillators
Perpendicular magnetic anisotropy
Saturation magnetization
Spin electronics
spin wave
spin-torque oscillator
Torque
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Summary:Micromagnetic simulation is used to investigate the frequency spectra of a perpendicularly magnetized nanocontact spin-torque oscillator subject to different boundary pinning conditions. Boundary confinement is critical to the output spectra: spectra under two limiting conditions are attributed to the different pinning strengths at the boundaries. The correlation between boundary pinning strength and output spectra may facilitate the design of future nanocontact microwave devices.
ISSN:1949-307X
1949-3088
DOI:10.1109/LMAG.2017.2771218