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Gigantic Magneto–Optical Effects in Multilayer Assemblies of Two‐Dimensional Titania Nanosheets
Author(s) -
Osada M.,
Ebina Y.,
Takada K.,
Sasaki T.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200501810
Subject(s) - materials science , nanosheet , ferromagnetism , nanoscopic scale , nanostructure , magneto optical , ultraviolet , magnetic circular dichroism , magneto , nanotechnology , optoelectronics , magnetic field , magnet , condensed matter physics , physics , quantum mechanics , astronomy , spectral line
A two‐dimensional titania nanosheet is proven to be useful as a host for spinelectronic materials. Magneto–optical measurements demonstrate that Co‐substituted titania nanosheets (Ti 0.8 Co 0.2 O 2 ) act as nanoscale ferromagnetic layers at room temperature, and their multilayer assemblies exhibit robust magnetic circular dichroism (MCD) in the ultraviolet–visible region. The availability of ferromagnetic nanostructures allows the rational design of high‐efficiency magneto–optical devices.