Magnetization dynamics in spin-torque oscillator with negative Ku for microwave assisted magnetic recording

Tiejun Zhou, Mingsheng Zhang, Hong Jing Chung, Hon Seng Wong, Shikun He, Boon Hao Low, Zhejie Liu, Febiana Tjiptoharsonos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The paper discusses the magnetization dynamics of spin-torque oscillator with negative Ku under alternative head field for microwave assisted magnetic recording. Magnetization switching of spin-injection layer (SIL) is essential to have the same precession mode of the field generation layer before and after the head field change directions. The SIL needs to be properly chosen in order to have short switching time. The layer stack and material selection of spin torque oscillator (STO) is also discussed in terms of stability against the stray field. The results discussed in this paper helps to understand the design fundamentals of STO for microwave assisted magnetic recording. All rights reserved -

Original languageEnglish
Title of host publicationMSSC 2014 - Digests of Magnetics Symposium 2014: Celebrating 50 Years of IEEE Magnetics Society
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479973828
DOIs
Publication statusPublished - 5 Nov 2014
Externally publishedYes
Event50th Magnetics Symposium of Singapore Chapter, MSSC 2014 - Singapore
Duration: 22 Sep 201423 Sep 2014

Other

Other50th Magnetics Symposium of Singapore Chapter, MSSC 2014
CitySingapore
Period22/9/1423/9/14

Fingerprint

Magnetic recording
magnetic recording
torque
Magnetization
Torque
Microwaves
oscillators
microwaves
magnetization
injection
materials selection
precession

Keywords

  • MAMR spin torque oscillator
  • negative anisotropy energy
  • spin injection

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Zhou, T., Zhang, M., Chung, H. J., Wong, H. S., He, S., Low, B. H., ... Tjiptoharsonos, F. (2014). Magnetization dynamics in spin-torque oscillator with negative Ku for microwave assisted magnetic recording. In MSSC 2014 - Digests of Magnetics Symposium 2014: Celebrating 50 Years of IEEE Magnetics Society [6947943] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MSSC.2014.6947943

Magnetization dynamics in spin-torque oscillator with negative Ku for microwave assisted magnetic recording. / Zhou, Tiejun; Zhang, Mingsheng; Chung, Hong Jing; Wong, Hon Seng; He, Shikun; Low, Boon Hao; Liu, Zhejie; Tjiptoharsonos, Febiana.

MSSC 2014 - Digests of Magnetics Symposium 2014: Celebrating 50 Years of IEEE Magnetics Society. Institute of Electrical and Electronics Engineers Inc., 2014. 6947943.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhou, T, Zhang, M, Chung, HJ, Wong, HS, He, S, Low, BH, Liu, Z & Tjiptoharsonos, F 2014, Magnetization dynamics in spin-torque oscillator with negative Ku for microwave assisted magnetic recording. in MSSC 2014 - Digests of Magnetics Symposium 2014: Celebrating 50 Years of IEEE Magnetics Society., 6947943, Institute of Electrical and Electronics Engineers Inc., 50th Magnetics Symposium of Singapore Chapter, MSSC 2014, Singapore, 22/9/14. https://doi.org/10.1109/MSSC.2014.6947943
Zhou T, Zhang M, Chung HJ, Wong HS, He S, Low BH et al. Magnetization dynamics in spin-torque oscillator with negative Ku for microwave assisted magnetic recording. In MSSC 2014 - Digests of Magnetics Symposium 2014: Celebrating 50 Years of IEEE Magnetics Society. Institute of Electrical and Electronics Engineers Inc. 2014. 6947943 https://doi.org/10.1109/MSSC.2014.6947943
Zhou, Tiejun ; Zhang, Mingsheng ; Chung, Hong Jing ; Wong, Hon Seng ; He, Shikun ; Low, Boon Hao ; Liu, Zhejie ; Tjiptoharsonos, Febiana. / Magnetization dynamics in spin-torque oscillator with negative Ku for microwave assisted magnetic recording. MSSC 2014 - Digests of Magnetics Symposium 2014: Celebrating 50 Years of IEEE Magnetics Society. Institute of Electrical and Electronics Engineers Inc., 2014.
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abstract = "The paper discusses the magnetization dynamics of spin-torque oscillator with negative Ku under alternative head field for microwave assisted magnetic recording. Magnetization switching of spin-injection layer (SIL) is essential to have the same precession mode of the field generation layer before and after the head field change directions. The SIL needs to be properly chosen in order to have short switching time. The layer stack and material selection of spin torque oscillator (STO) is also discussed in terms of stability against the stray field. The results discussed in this paper helps to understand the design fundamentals of STO for microwave assisted magnetic recording. All rights reserved -",
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