Site-specific fabrication and epitaxial conversion of functional oxide nanodisk arrays

Zixiao Pan, Nasim Alem, Tao Sun, Vinayak P. Dravid*

*Corresponding author for this work

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Nanodisk arrays of technologically important magnetic (CoFe 2O 4) and ferroelectric (BaTiO 4) oxides are fabricated on diverse substrates with well-defined size and separation using the soft-eBL approach. We demonstrate that below a certain pattern size, the as-deposited amorphous nanodisks can be readily converted into dense, single-crystal form that exhibit cube-on-cube heteroepitaxy with respect to the underlying single-crystal substrate. Such single-crystal disks show well-defined truncated-pyramid morphology that is consistent with Wulff construction. The mechanism of morphology development with the pattern size change is discussed. Localized characterization of the crystallinity, chemical composition, and magnetic behavior of the CFO nanodisk patterns are carried out using analytical transmission electron microscopy and magnetic force microscopy. Such solution-based epitaxial conversion of patterned arrays of multifunctional oxides has potential for viable cost-effective technological applications.

Original languageEnglish (US)
Pages (from-to)2344-2348
Number of pages5
JournalNano letters
Volume6
Issue number10
DOIs
StatePublished - Oct 1 2006

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Site-specific fabrication and epitaxial conversion of functional oxide nanodisk arrays'. Together they form a unique fingerprint.

  • Cite this