Fabrication of FePt and CoPt magnetic nanodot arrays by electrodeposition process

Takayuki Homma, Siggi Wodarz, Daiki Nishiie, Tomohiro Otani, Siyuan Ge, Giovanni Zangari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Fabrication of Co-Pt and Fe-Pt ferromagnetic nanodot arrays for the application of ultra-high density bit patterned media (BPM) by electrochemical processes was described. In order to form patterned substrates for nanodot arrays with the density higher than 1 Tbit/inch2, electron beam lithography technique was employed. Nanopatterns with 25 nm and 18 nm pitch, which correspond to 1 and 2 Tbit/inch2 were successfully formed by optimizing the condition of the lithography process, and Co-Pt and Fe-Pt with relatively high coercivity of 4.8 kOe and 10.3 kOe were formed by electrodeposition. By utilizing the nanopatterned substrates, Co-Pt and Fe-Pt nanodot arrays with 25 nm and 35 nm pitch were uniformly formed. These results demonstrate capability of the electrochemical processes for fabricating magnetic nanodot arrays with Tbit-level density.

Original languageEnglish
Title of host publicationMagnetic Materials, Processes, and Devices 13
EditorsY. Kitamoto, C. Bonhote, G. Zangari, S. R. Brankovic, H. H. Gatzen, T. Osaka, P. Hesketh
PublisherElectrochemical Society Inc.
Pages1-9
Number of pages9
Edition31
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2014
EventSymposium on Magnetic Materials, Processes, and Devices 13 - 2014 ECS and SMEQ Joint International Meeting - Cancun, Mexico
Duration: 2014 Oct 52014 Oct 9

Publication series

NameECS Transactions
Number31
Volume64
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherSymposium on Magnetic Materials, Processes, and Devices 13 - 2014 ECS and SMEQ Joint International Meeting
CountryMexico
CityCancun
Period14/10/514/10/9

ASJC Scopus subject areas

  • Engineering(all)

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