Anisotropy of magnetization-induced surface optical second harmonic generation from Co doped rutile TiO 2

R. Watanabe, M. Tamura, Y. Yahata, G. Mizutani, T. Suzuki, Y. Segawa, Y. Matsumoto, Y. Yamamoto, H. Koinuma

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have investigated the surface magnetization anisotropy of 5 at% Co doped rutile TiO 2 (1 1 0) using magnetization-induced optical second harmonic generation (MSHG) in the longitudinal Kerr configuration with an incident beam angle of 4°. The MSH intensity pattern from the Co:TiO 2 without surface Co clusters showed two anisotropic lobes at the second harmonic photon energy of 2 ℏ ω = 3.13 eV. Since MSH intensity is proportional to surface magnetization, the result indicates an anisotropy of the surface magnetization of Co:rutile TiO 2 (1 1 0). This confirms the possibility that 5 at% Co:rutile TiO 2 (1 1 0) is a ferromagnetic dilute magnetic semiconductor at its surface, as proposed in our previous paper.

Original languageEnglish
Pages (from-to)1092-1095
Number of pages4
JournalApplied Surface Science
Volume256
Issue number4
DOIs
Publication statusPublished - 2009 Nov 30
Externally publishedYes

Keywords

  • Anisotropic surface magnetization
  • Co doped rutile TiO (1 1 0)
  • Magnetization-induced optical second harmonic generation (MSHG)

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Fingerprint Dive into the research topics of 'Anisotropy of magnetization-induced surface optical second harmonic generation from Co doped rutile TiO <sub>2</sub>'. Together they form a unique fingerprint.

  • Cite this

    Watanabe, R., Tamura, M., Yahata, Y., Mizutani, G., Suzuki, T., Segawa, Y., Matsumoto, Y., Yamamoto, Y., & Koinuma, H. (2009). Anisotropy of magnetization-induced surface optical second harmonic generation from Co doped rutile TiO 2 Applied Surface Science, 256(4), 1092-1095. https://doi.org/10.1016/j.apsusc.2009.05.073