Model analysis of tilted spin-torque oscillator with magnetic write head for shingled microwave-assisted magnetic recording

Takuto Katayama; Yasushi Kanai; Kazuetsu Yoshida; Simon J. Greaves; Hiroaki Muraoka

doi:10.1109/TMAG.2014.2325609

Model analysis of tilted spin-torque oscillator with magnetic write head for shingled microwave-assisted magnetic recording

Takuto Katayama, Yasushi Kanai, Kazuetsu Yoshida, Simon J. Greaves, Hiroaki Muraoka

Broadband Engineering Division

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

A model analysis was used to investigate a spin-transfer torque oscillator (STO) and magnetic write head for shingled microwave-assisted magnetic recording, where the interactions between STO and write head were included. The magnetic head had a tilted main pole (MP)-trailing shield (TS) gap with respect to the medium surface. The STO was placed in the tilted gap and off-center with respect to the MP center axis. The head structure allowed stable STO oscillation due to the lower in-plane field on the STO and large magnetic head field and high field gradient in the cross-track direction due to the wide pole. An off-centered STO in the MP-TS tilted gap had a stable oscillation at the cost of a slight reduction in oscillation amplitude.

Original language	English
Article number	6971780
Journal	IEEE Transactions on Magnetics
Volume	50
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2014.2325609
Publication status	Published - 2014 Nov 1

Keywords

Micromagnetic simulation
microwave-assisted magnetic recording
shingled recording
tilted spin torque oscillator

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2014.2325609

Cite this

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title = "Model analysis of tilted spin-torque oscillator with magnetic write head for shingled microwave-assisted magnetic recording",

abstract = "A model analysis was used to investigate a spin-transfer torque oscillator (STO) and magnetic write head for shingled microwave-assisted magnetic recording, where the interactions between STO and write head were included. The magnetic head had a tilted main pole (MP)-trailing shield (TS) gap with respect to the medium surface. The STO was placed in the tilted gap and off-center with respect to the MP center axis. The head structure allowed stable STO oscillation due to the lower in-plane field on the STO and large magnetic head field and high field gradient in the cross-track direction due to the wide pole. An off-centered STO in the MP-TS tilted gap had a stable oscillation at the cost of a slight reduction in oscillation amplitude.",

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AU - Katayama, Takuto

AU - Kanai, Yasushi

AU - Yoshida, Kazuetsu

AU - Greaves, Simon J.

AU - Muraoka, Hiroaki

PY - 2014/11/1

Y1 - 2014/11/1

N2 - A model analysis was used to investigate a spin-transfer torque oscillator (STO) and magnetic write head for shingled microwave-assisted magnetic recording, where the interactions between STO and write head were included. The magnetic head had a tilted main pole (MP)-trailing shield (TS) gap with respect to the medium surface. The STO was placed in the tilted gap and off-center with respect to the MP center axis. The head structure allowed stable STO oscillation due to the lower in-plane field on the STO and large magnetic head field and high field gradient in the cross-track direction due to the wide pole. An off-centered STO in the MP-TS tilted gap had a stable oscillation at the cost of a slight reduction in oscillation amplitude.

AB - A model analysis was used to investigate a spin-transfer torque oscillator (STO) and magnetic write head for shingled microwave-assisted magnetic recording, where the interactions between STO and write head were included. The magnetic head had a tilted main pole (MP)-trailing shield (TS) gap with respect to the medium surface. The STO was placed in the tilted gap and off-center with respect to the MP center axis. The head structure allowed stable STO oscillation due to the lower in-plane field on the STO and large magnetic head field and high field gradient in the cross-track direction due to the wide pole. An off-centered STO in the MP-TS tilted gap had a stable oscillation at the cost of a slight reduction in oscillation amplitude.

KW - Micromagnetic simulation

KW - microwave-assisted magnetic recording

KW - shingled recording

KW - tilted spin torque oscillator

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Model analysis of tilted spin-torque oscillator with magnetic write head for shingled microwave-assisted magnetic recording

Abstract

Keywords

ASJC Scopus subject areas

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