High field enhancement between transducer and resonant antenna for application in bit patterned heat-assisted magnetic recording

Jacek Gosciniak, Mahmoud Rasras

Research output: Contribution to journalArticle

Abstract

Heat-Assisted Magnetic Recording (HAMR) is a well-known technology that uses the concept of a plasmonic antenna to shrink the optical focused spot to sizes of tens of nanometers, in order to overcome the limits of conventional magnetic recording and to reach areal density >1 Tb/in 2 . In this paper, we propose a novel concept that allows to increase a power transfer to the recording media deposited on the patterned substrate that takes a full advantage of the resonant antenna conditions to achieve further intensity enhancement in the gap and consequently high-power transfer to the recording media. Apart from the high field enhancement, the proposed concept ensures uniform field distribution in the gap that translates into uniform and higher temperature in the recording media, which is highly desired in the HAMR technology.

Original languageEnglish (US)
Pages (from-to)8605-8611
Number of pages7
JournalOptics Express
Volume27
Issue number6
DOIs
StatePublished - Mar 18 2019

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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