Analysis of Switchable Spin Torque Oscillator for Microwave Assisted Magnetic Recording
Joint Authors
Zhou, T.
Zhang, Mingsheng
Yuan, Zhimin
Source
Advances in Condensed Matter Physics
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-10
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
A switchable spin torque oscillator (STO) with a negative magnetic anisotropy oscillation layer for microwave assisted magnetic recording is analyzed theoretically and numerically.
The equations for finding the STO frequency and oscillation angle are derived from Landau-Lifshitz-Gilbert (LLG) equation with the spin torque term in spherical coordinates.
The theoretical analysis shows that the STO oscillating frequency remains the same and oscillation direction reverses after the switching of the magnetization of the spin polarization layer under applied alternative magnetic field.
Numerical analysis based on the derived equations shows that the oscillation angle increases with the increase of the negative anisotropy energy density (absolute value) but decreases with the increase of spin current, the polarization of conduction electrons, the saturation magnetization, and the total applied magnetic field in the z direction.
The STO frequency increases with the increase of spin current, the polarization of conduction electrons, and the negative anisotropy energy density (absolute value) but decreases with the increase of the saturation magnetization and the total applied magnetic field in the z direction.
American Psychological Association (APA)
Zhang, Mingsheng& Zhou, T.& Yuan, Zhimin. 2015. Analysis of Switchable Spin Torque Oscillator for Microwave Assisted Magnetic Recording. Advances in Condensed Matter Physics،Vol. 2015, no. 2015, pp.1-6.
https://search.emarefa.net/detail/BIM-1052262
Modern Language Association (MLA)
Zhang, Mingsheng…[et al.]. Analysis of Switchable Spin Torque Oscillator for Microwave Assisted Magnetic Recording. Advances in Condensed Matter Physics No. 2015 (2015), pp.1-6.
https://search.emarefa.net/detail/BIM-1052262
American Medical Association (AMA)
Zhang, Mingsheng& Zhou, T.& Yuan, Zhimin. Analysis of Switchable Spin Torque Oscillator for Microwave Assisted Magnetic Recording. Advances in Condensed Matter Physics. 2015. Vol. 2015, no. 2015, pp.1-6.
https://search.emarefa.net/detail/BIM-1052262
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052262