Butsuri
Online ISSN : 2423-8872
Print ISSN : 0029-0181
ISSN-L : 0029-0181
Volume 75 , Issue 12
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  • Yukiko Takahashi
    Type: Reviews
    2020 Volume 75 Issue 12 Pages 736-745
    Published: December 05, 2020
    Released: December 24, 2020
    JOURNALS RESTRICTED ACCESS

    Since the first shipping of Hard Disk Drives (HDDs) in 1956, the areal density of HDDs has rapidly increased with the dramatic spread of internet and it has reached 1 Tbit/in2. In order to increase the areal density further, new magnetic recording technologies have been proposed, such as heat assisted magnetic recording (HAMR), microwave assisted magnetic recording (MAMR) and all optical switching (AOS). HAMR and MAMR are very close to the mass production and further increase of the areal density will be achieved. Understanding of the underlying physics on the magnetic switching under the energy assistance will pave a way to reach ultra-high density magnetic recording with energy saving.

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