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

Fingerprint

Magnetooptical effects
Nanosheets
Magnetooptical devices
Titanium
Superlattices
Dichroism
Nanostructures
Multilayers
Availability
Fabrication
Wavelength
Molecules
Temperature
titanium dioxide

Keywords

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

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemical Engineering (miscellaneous)

Cite this

Magneto-optical effects in superlattice assemblies of ferromagnetic nanosheets. / Osada, Minoru; Ebina, Yasuo; Takada, Kazunori; Sasaki, Takayoshi.

In: Key Engineering Materials, Vol. 350, 2007, p. 15-18.

Research output: Contribution to journalArticle

Osada, Minoru ; Ebina, Yasuo ; Takada, Kazunori ; Sasaki, Takayoshi. / Magneto-optical effects in superlattice assemblies of ferromagnetic nanosheets. In: Key Engineering Materials. 2007 ; Vol. 350. pp. 15-18.
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