Magneto-optical effects in superlattice assemblies of ferromagnetic nanosheets

Minoru Osada, Yasuo Ebina, Kazunori Takada, Takayoshi Sasaki

Research output: Contribution to journalArticle

Abstract

We have demonstrated a fabrication procedure for spin-electronic devices by using two-dimentional titania nanosheets. Magneto-optical Kerr measurements demonstrate that Co-substituted titania nanosheets (Ti0.8Co 0.2O2) act as nanoscale ferromagnetic layers at room temperature, and their multilayer-assemblies exhibit robust magnetic circular dichroism (104-105 deg/cm) near the absorption edge at 260 nm, an operating wavelength being the shortest attained so far. The availability of ferromagnetic nanostructures and their molecule-level assembly allow the rational design and construction of high-efficiency magneto-optical devices by forming superlattices.

Original languageEnglish
Pages (from-to)15-18
Number of pages4
JournalKey Engineering Materials
Volume350
DOIs
Publication statusPublished - 2007
Externally publishedYes

Keywords

  • Ferromagnetism
  • Layer-by-layer assembly
  • Magneto-optical effect
  • Titania nanosheet

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemical Engineering (miscellaneous)

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