Journal ArticleDOI
Dynamics of the rutile structure. III. Lattice dynamics, infrared and Raman spectra of SnO2
TLDR
In this article, the elastic constants and the dispersion curves for phonons propagating along (0,0, xi ) and ( xi, xi, 0) are calculated using a rigid ion model with short range central axially symmetric forces and long range Coulomb forces which gives satisfactory agreement with the experimentally observed frequencies.Abstract:
For Pt. II see abstr. A71824 of 1970. The polarized infrared reflection absorption and laser Raman spectra have been recorded at both 300K and 100K for single crystals of SnO2. The dielectric parameters epsilon ' and epsilon " have been derived and the optically active transverse and longitudinal k=0 phonon frequencies found. The elastic constants and the dispersion curves for phonons propagating along (0,0, xi ) and ( xi , xi ,0) are calculated using a rigid ion model with short range central axially symmetric forces and long range Coulomb forces which gives satisfactory agreement with the experimentally observed frequencies. The principal force constants and the effective charges on the ions are compared with those for other crystals with the rutile structure. The multiphonon infrared absorption is compared with theoretical predictions based on selection rules and the calculated phonon dispersion curves. The hydroxyl ion impurities are shown to be oriented parallel to the crystal's optic axis.read more
Citations
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Journal ArticleDOI
The surface and materials science of tin oxide
Matthias Batzill,Ulrike Diebold +1 more
TL;DR: A review of surface science studies of single crystal surfaces, but selected studies on powder and polycrystalline films are also incorporated in order to provide connecting points between surface sciences studies with the broader field of materials science of tin oxide as discussed by the authors.
Journal ArticleDOI
The complete Raman spectrum of nanometric SnO2 particles
TL;DR: In this article, the authors present a complete Raman spectrum analysis of SnO2 nanoparticles, which comprises modification of the normal vibration modes active in Raman when the spectra are obtained from nanocrystals of Sn O 2 nanoparticles in the region around 475 −775 cm 21, and the appearance of the acoustic modes in the low-frequency region of the spectrum.
Journal ArticleDOI
Large scale rapid oxidation synthesis of sno2 nanoribbons
TL;DR: In this paper, a ribbon-like morphology of one-dimensional SnO2 nanoribbons with a ribbonlike morphology has been obtained in large scale via rapid oxidation of elemental tin at 1080 °C.
Journal ArticleDOI
Structural Characterization of Nanocrystalline SnO2by X-Ray and Raman Spectroscopy
TL;DR: In this paper, the size of the crystallites was found to increase from 2 nm for as-prepared samples to 30 nm for samples annealed for 3.5 hr at 920°C.
Journal ArticleDOI
Optical and electrical properties of radio frequency sputtered tin oxide films doped with oxygen vacancies, F, Sb, or Mo
TL;DR: In this paper, the authors used reactive rf magnetron sputtering of Sn, Sb, or Mo in Ar+O2(+CF4) onto glass heated to a temperature up to 530 °C. Optimized deposition parameters gave SnOx:(Sb,F) films with high luminous transmittance, low luminous absorptance, high infrared reflectance, and dc resistivity down to 9.1×10−4 Ω
References
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Journal ArticleDOI
The Raman effect in crystals
TL;DR: A review of progress in the theoretical and experimental study of the Raman effect in crystals during the past ten years is given in this article, where the theory of those properties of long-wavelength lattice vibrations in both cubic and uniaxial crystals which can be studied by Raman scattering.
Journal ArticleDOI
Raman Effect in Zinc Oxide
TL;DR: In this paper, the frequency and symmetry character of the fundamental modes of the Raman effect in zinc oxide has been determined using the continuous helium-neon and ionized argon lasers as sources.
Journal ArticleDOI
Infrared Absorption at Longitudinal Optic Frequency in Cubic Crystal Films
TL;DR: In this article, a strong infrared absorption band was observed in thin flat films of cubic ionic crystals and was found to be in good qualitative agreement with, but somewhat stronger than, the band predicted from a dielectric dispersion curve obtained from other types of measurements.
Journal ArticleDOI
On the Polar Vibrations of Alkali Halides
TL;DR: In this paper, the long wave-length, polar lattice vibrations of alkali halide crystals are discussed without making any specific assumptions about the detailed interactions between the ions, and the ratio of the two frequencies is found to be independent of the effective charge of an ion defined as follows: all of the positive ions in a crystal slab are displaced by an equal amount in a direction perpendicular to the faces of the slab and all of negative ions in the opposite direction.
Journal ArticleDOI
Dielectric constants and lattice vibrations
W. Cochran,R.A. Cowley +1 more
TL;DR: In this article, a relation is derived between the frequencies of lattice vibrations of long wavelength whose wave vector is in the α-direction in a crystal, the dielectric dispersion frequencies, and the ratio of the static and high-frequency limits of the component ϵαα of the tensor.
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