Characterization of electrodeposited Co-Pt nanodot array at initial deposition stage

Siggi Wodarz, Tomohiro Otani, Hiroki Hagiwara, Takayuki Homma

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

Abstract

We have fabricated Co-Pt nanodot arrays by electrochemical process for the application of bit patterned media (BPM), which is proposed as a key technology for future recording media. Since formation of uniform nanodot arrays is required for BPM, controlling the initial stages of electrodeposition is significant. In this work, we analyzed the effects of applied potential and size of nano-patterns on initial stages of Co-Pt electrodeposition. As a result, number of Co-Pt nuclei decreased in smaller nano-pore. In particular, formation of Co-Pt single grains, which exhibit high and uniform coercivity, was expected with low overpotential in nanopore with 10 nm diameter. Furthermore, coercivities of Co-Pt films at the initial stage increased with lower overpotential, since Co-Pt nucleated and grew along with Ru underlayer with high orientation. These results indicate that magnetic properties of Co-Pt nanodot arrays can be optimized by controlling the nucleation and growth behavior of Co-Pt.

Original languageEnglish
Title of host publicationStudent Poster Session (General) - 226th ECS Meeting
EditorsV. R. Subramanian, C. S. Johnson, R. H. Lara-Castro, K. B. Sundaram, V. Chaitanya, P. Pharkya
PublisherElectrochemical Society Inc.
Pages99-105
Number of pages7
Edition45
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2014
EventSymposium on Student Poster General Session - 2014 ECS and SMEQ Joint International Meeting - Cancun, Mexico
Duration: 2014 Oct 52014 Oct 9

Publication series

NameECS Transactions
Number45
Volume64
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Other

OtherSymposium on Student Poster General Session - 2014 ECS and SMEQ Joint International Meeting
Country/TerritoryMexico
CityCancun
Period14/10/514/10/9

ASJC Scopus subject areas

  • Engineering(all)

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