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Title: Micromagnetic model analysis of integrated single-pole-type head with tilted spin-torque oscillator for high-frequency microwave-assisted magnetic recording

Abstract

The spin-torque oscillator (STO) is the most important component in microwave-assisted magnetic recording. Some requirements for the STO are: large amplitude and stable oscillation, small injected current, and oscillation at a frequency that excites resonance in a recording medium. It is also necessary for the STO oscillation to closely follow the head coil current. In this paper, STOs were integrated into write heads and micromagnetic analyses carried out to obtain a write head structure with stable STO oscillation that could follow a high-frequency head coil current.

Authors:
;  [1];  [2]; ;  [3]
  1. Department of Information and Electronics Engineering, Niigata Institute of Technology, Kashiwazaki, Niigata 945-1195 (Japan)
  2. Department of Information and Communication Engineering, Kogakuin University, Shinjuku-ku, Tokyo 163-8622 (Japan)
  3. Research Institute of Electrical Communication, Tohoku University, Sendai, Miyagi 980-8577 (Japan)
Publication Date:
OSTI Identifier:
22410011
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRIC CURRENTS; MAGNET COILS; MAGNETIC CORES; MAGNETIC MATERIALS; MAGNETIZATION; MICROWAVE RADIATION; OSCILLATIONS; OSCILLATORS; RESONANCE; SPIN; TORQUE

Citation Formats

Katayama, Takuto, Kanai, Yasushi, E-mail: kanai@iee.niit.ac.jp, Yoshida, Kazuetsu, Greaves, Simon, and Muraoka, Hiroaki. Micromagnetic model analysis of integrated single-pole-type head with tilted spin-torque oscillator for high-frequency microwave-assisted magnetic recording. United States: N. p., 2015. Web. doi:10.1063/1.4907328.
Katayama, Takuto, Kanai, Yasushi, E-mail: kanai@iee.niit.ac.jp, Yoshida, Kazuetsu, Greaves, Simon, & Muraoka, Hiroaki. Micromagnetic model analysis of integrated single-pole-type head with tilted spin-torque oscillator for high-frequency microwave-assisted magnetic recording. United States. doi:10.1063/1.4907328.
Katayama, Takuto, Kanai, Yasushi, E-mail: kanai@iee.niit.ac.jp, Yoshida, Kazuetsu, Greaves, Simon, and Muraoka, Hiroaki. Thu . "Micromagnetic model analysis of integrated single-pole-type head with tilted spin-torque oscillator for high-frequency microwave-assisted magnetic recording". United States. doi:10.1063/1.4907328.
@article{osti_22410011,
title = {Micromagnetic model analysis of integrated single-pole-type head with tilted spin-torque oscillator for high-frequency microwave-assisted magnetic recording},
author = {Katayama, Takuto and Kanai, Yasushi, E-mail: kanai@iee.niit.ac.jp and Yoshida, Kazuetsu and Greaves, Simon and Muraoka, Hiroaki},
abstractNote = {The spin-torque oscillator (STO) is the most important component in microwave-assisted magnetic recording. Some requirements for the STO are: large amplitude and stable oscillation, small injected current, and oscillation at a frequency that excites resonance in a recording medium. It is also necessary for the STO oscillation to closely follow the head coil current. In this paper, STOs were integrated into write heads and micromagnetic analyses carried out to obtain a write head structure with stable STO oscillation that could follow a high-frequency head coil current.},
doi = {10.1063/1.4907328},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}