Magneto-Optical Effects in Superlattice Assemblies of Ferromagnetic Nanosheets |
| Journal |
Key Engineering Materials (Volume 350) |
| Volume |
Electroceramics in Japan X |
| Edited by |
K. Katayama, K. Kato, T. Takenaka, M. Takata and K. Shinozaki |
| Pages |
15-18 |
| DOI |
10.4028/www.scientific.net/KEM.350.15 |
| Online since |
October, 2007 |
| Authors |
Minoru Osada,
Yasuo Ebina,
Kazunori Takada,
Takayoshi Sasaki
|
| Keywords |
Ferromagnetism, Layer-by-Layer Assembly, Magneto-Optical Effect, Titania Nanosheet |
| 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 (Ti0.8Co0.2O2) 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. |
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