Gigantic magneto-optical effects induced by (Fe∕Co)-cosubstitution in titania nanosheets

Magneto-optical Faraday effect has been investigated for 3d-transition-metal-substituted titania nanosheets Ti1−xMxO2 (M=Fe,Co). In Ti0.8Co0.2O2 and Ti0.6Fe0.4O2 nanosheets, a strong magneto-optical response (∼104deg∕cm) appeared near the absorption edge at 260nm. We find that tailoring magneto-opti...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Applied physics letters 2008-06, Vol.92 (25)
Hauptverfasser: Osada, Minoru, Itose, Masayuki, Ebina, Yasuo, Ono, Kanta, Ueda, Shigenori, Kobayashi, Keisuke, Sasaki, Takayoshi
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Magneto-optical Faraday effect has been investigated for 3d-transition-metal-substituted titania nanosheets Ti1−xMxO2 (M=Fe,Co). In Ti0.8Co0.2O2 and Ti0.6Fe0.4O2 nanosheets, a strong magneto-optical response (∼104deg∕cm) appeared near the absorption edge at 260nm. We find that tailoring magneto-optical properties could be achieved by (Fe∕Co) cosubstitution and an optimally doped Ti0.75Fe0.1Co0.15O2 nanosheet exhibits a gigantic magneto-optical response (∼105deg∕cm) over the wide wavelength region (400–750nm). By analyzing electronic structures from first-principle calculations, we have clarified that the d-d transitions are responsible for the gigantic signal in (Fe∕Co)-cosubstituted nanosheets.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2937094