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Optical dielectric functions for amorphous Al2O3 and γ-Al2O3 (1988)

Chu, Y. T. ; Bates, J. B. ; White, C. W. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 64 (1988), S. 3727-3730

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: Using the classical oscillator model, the optical dielectric functions for amorphous alumina (a-Al2O3) and gamma alumina (γ-Al2O3) thin films prepared by ion implantation and subsequent annealing of sapphire (α-Al2O3) substrates were determined for the first time from analysis of infrared reflection spectra. Two transverse optical modes at 422 and 721 cm−1 were obtained for the a-Al2O3 film while four modes at 357, 536, 744, and 807 cm−1 were identified for the γ-Al2O3 film. Also, the problems involving the analysis of modes with large damping are discussed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.341367

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