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

doi:10.1016/j.apsusc.2009.05.073

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

ENG - Applied Chemistry

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	1092-1095
Number of pages	4
Journal	Applied Surface Science
Volume	256
Issue number	4
DOIs	https://doi.org/10.1016/j.apsusc.2009.05.073
Publication status	Published - 2009 Nov 30

Keywords

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

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10.1016/j.apsusc.2009.05.073

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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

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

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.",

keywords = "Anisotropic surface magnetization, Co doped rutile TiO (1 1 0), Magnetization-induced optical second harmonic generation (MSHG)",

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

year = "2009",

month = nov,

day = "30",

doi = "10.1016/j.apsusc.2009.05.073",

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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, vol. 256, no. 4, pp. 1092-1095. https://doi.org/10.1016/j.apsusc.2009.05.073

TY - JOUR

T1 - Anisotropy of magnetization-induced surface optical second harmonic generation from Co doped rutile TiO 2

AU - Watanabe, R.

AU - Tamura, M.

AU - Yahata, Y.

AU - Mizutani, G.

AU - Suzuki, T.

AU - Segawa, Y.

AU - Matsumoto, Y.

AU - Yamamoto, Y.

AU - Koinuma, H.

PY - 2009/11/30

Y1 - 2009/11/30

N2 - 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.

AB - 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.

KW - Anisotropic surface magnetization

KW - Co doped rutile TiO (1 1 0)

KW - Magnetization-induced optical second harmonic generation (MSHG)

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U2 - 10.1016/j.apsusc.2009.05.073

DO - 10.1016/j.apsusc.2009.05.073

M3 - Article

AN - SCOPUS:70749096752

SN - 0169-4332

VL - 256

SP - 1092

EP - 1095

JO - Applied Surface Science

JF - Applied Surface Science

IS - 4

ER -

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

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