Effect of Fe coating of nucleation sites on epitaxial growth of Fe oxide nanocrystals on Si substrates

Takafumi Ishibe, Kentaro Watanabe, Yoshiaki Nakamura

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We studied the effect of Fe coating on the epitaxial growth of Fe3O4nanocrystals (NCs) over Fe-coated Ge epitaxial nuclei on Si(111). To completely cover Ge nuclei with Fe, some amount of Fe (>8 monolayers) must be deposited. Such covering is a key to epitaxial growth because an Fe coating layer prevents the oxidation of Ge surfaces during Fe3O4 formation, resulting in the epitaxial growth of Fe3O4 on them. This study demonstrates that an appropriate Fe coating of nucleation sites leads to the epitaxial growth of Fe3O4 NCs on Si substrates, indicating the realization of environmentally friendly and low-cost Fe3O4 NCs as the resistance random access memory material.

Original languageEnglish
Article number08NB12
JournalJapanese journal of applied physics
Volume55
Issue number8
DOIs
Publication statusPublished - 2016 Aug
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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