Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS
Volume 42, Issue 2B, Pages 981-988Publisher
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/JJAP.42.981
Keywords
magnetic recording; hybrid recording; thermomagnetic recording; near field; solid immersion lens; surface plasmon; bow tie antenna; superparamagnetic limit
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Heat-assisted magnetic recording (HAMR), also known as hybrid recording, has been, proposed to enable storage densities greater than 1 Tb/in(2) in hard disc drives while circumventing the superparamagnetic limit. Light is delivered in the near field to the recording medium to heat just the spot which is to be recorded. Techniques based on apertures, antennas, waveguides,, and solid immersion lenses have been suggested for delivering substantial amounts of optical power into subwavelength spots in the near field. A practical transducer for HAMR may require a combination of techniques.
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