High-Frequency Magnetic Recording Using a Dual Write Head

Naoki Akitaya; Simon John Greaves; Hiroaki Muraoka

doi:10.1109/TMAG.2015.2512593

High-Frequency Magnetic Recording Using a Dual Write Head

Naoki Akitaya, Simon John Greaves, Hiroaki Muraoka

Broadband Engineering Division

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

1 Citation (Scopus)

Abstract

Ultrashort magnetic field pulses of tens of picoseconds duration are able to reverse the magnetization of a particle if the applied field is perpendicular to the initial magnetization vector. Here, a dual write head structure combining ring and single pole type (SPT) heads is proposed to generate such fields in a recording medium in order to increase the rate at which data can be written. Using such a head, the magnetization reversal time can be reduced to 1/2-1/3 of that when using an SPT head.

Original language	English
Article number	7366572
Journal	IEEE Transactions on Magnetics
Volume	52
Issue number	7
DOIs	https://doi.org/10.1109/TMAG.2015.2512593
Publication status	Published - 2016 Jul 1

Keywords

Micromagnetics
dual head
high speed magnetic recording

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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