Gigantic magneto-optical effects induced by (FeCo) -cosubstitution in titania nanosheets

Minoru Osada, Masayuki Itose, Yasuo Ebina, Kanta Ono, Shigenori Ueda, Keisuke Kobayashi, Takayoshi Sasaki

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Magneto-optical Faraday effect has been investigated for 3d -transition-metal-substituted titania nanosheets Ti1-xM xO2 (M=Fe,Co). In Ti0.8 Co0.2O 2 and Ti0.6 Fe0.4O2 nanosheets, a strong magneto-optical response (∼ 104 deg/cm) appeared near the absorption edge at 260 nm. We find that tailoring magneto-optical properties could be achieved by (FeCo) cosubstitution and an optimally doped Ti 0.75 Fe0.1Co0.15O2 nanosheet exhibits a gigantic magneto-optical response (∼ 105 deg/cm) over the wide wavelength region (400-750 nm). By analyzing electronic structures from first-principle calculations, we have clarified that the d-d transitions are responsible for the gigantic signal in (FeCo) -cosubstituted nanosheets.

Original languageEnglish
Article number253110
JournalApplied Physics Letters
Volume92
Issue number25
DOIs
Publication statusPublished - 2008
Externally publishedYes

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titanium
Faraday effect
transition metals
electronic structure
optical properties
wavelengths

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Osada, M., Itose, M., Ebina, Y., Ono, K., Ueda, S., Kobayashi, K., & Sasaki, T. (2008). Gigantic magneto-optical effects induced by (FeCo) -cosubstitution in titania nanosheets. Applied Physics Letters, 92(25), [253110]. https://doi.org/10.1063/1.2937094

Gigantic magneto-optical effects induced by (FeCo) -cosubstitution in titania nanosheets. / Osada, Minoru; Itose, Masayuki; Ebina, Yasuo; Ono, Kanta; Ueda, Shigenori; Kobayashi, Keisuke; Sasaki, Takayoshi.

In: Applied Physics Letters, Vol. 92, No. 25, 253110, 2008.

Research output: Contribution to journalArticle

Osada, M, Itose, M, Ebina, Y, Ono, K, Ueda, S, Kobayashi, K & Sasaki, T 2008, 'Gigantic magneto-optical effects induced by (FeCo) -cosubstitution in titania nanosheets', Applied Physics Letters, vol. 92, no. 25, 253110. https://doi.org/10.1063/1.2937094
Osada, Minoru ; Itose, Masayuki ; Ebina, Yasuo ; Ono, Kanta ; Ueda, Shigenori ; Kobayashi, Keisuke ; Sasaki, Takayoshi. / Gigantic magneto-optical effects induced by (FeCo) -cosubstitution in titania nanosheets. In: Applied Physics Letters. 2008 ; Vol. 92, No. 25.
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AU - Ueda, Shigenori

AU - Kobayashi, Keisuke

AU - Sasaki, Takayoshi

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