Micromagnetic Model Simulation of Spin-Torque Oscillator and Write Head for Microwave-Assisted Magnetic Recording – Spin Injection Layer with In-Plane Anisotropy –

Authors

  • Yasushi KANAI Department of Information and Electronics Engineering Niigata Institute of Technology Kashiwazaki, Japan
  • Ryo ITAGAKI Department of Information and Electronics Engineering Niigata Institute of Technology Kashiwazaki, Japan
  • Simon GREAVES Research Institute of Electrical Communication (RIEC) Tohoku University Sendai, Japan
  • Hiroaki MURAOKA Research Institute of Electrical Communication (RIEC) Tohoku University Sendai, Japan

Keywords:

micromagnetic simulations, microwave-assisted magnetic recording, spin-torque oscillator, write head

Abstract

Micromagnetic simulations were carried out to obtain stable oscillation of a spin transfer torque oscillator (STO) inserted into the gap between the main pole and trailing shield of a write head. We assumed a spin injection layer with in-plane anisotropy. Results show that reducing the magnetostatic interaction between the write head and the STO is the key to obtaining stable STO oscillation.

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References

J.-G. Zhu, X. Zhu, and Y. Tang, “Microwave assisted magnetic recording,” IEEE Trans. on Magn., vol. 44, no. 1, pp. 125-131, Jan. 2008.

Energy-assisted Recording Technology, [Online.] Available: https://play. vidyard.com/JZLozr2ujb2jR964BaFNPW

Y. Kanai, R. Itagaki, S. Greaves, and H. Muraoka, “Micromagnetic model analysis of various spin torque oscillators with write head for microwave-assisted magnetic recording,” IEEE Trans. on Magn., vol. 53, no. 11, Nov. 2017. Art. no. 3001105. H. Sepeheri-Amin, S. Bosu, C. Abert, Y. Sakuraba, S. Kasai, M. Hayashi, D. Suess, and K. Hono, “Design and development of spintorque-oscillator for microwave assisted magnetic recording,” The Magnetic Recording Conference, E2, Tsukuba, Japan, Aug. 2017.

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Published

2019-02-01

How to Cite

[1]
Yasushi KANAI, Ryo ITAGAKI, Simon GREAVES, and Hiroaki MURAOKA, “Micromagnetic Model Simulation of Spin-Torque Oscillator and Write Head for Microwave-Assisted Magnetic Recording – Spin Injection Layer with In-Plane Anisotropy –”, ACES Journal, vol. 34, no. 02, pp. 226–227, Feb. 2019.

Issue

2019: Vol 34 Iss 2

Section

Articles