Browsing by Autor "N.V. Joshi"

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    Anomalous sublinear behaviour of photoresponse in monocrystal of ZnTe
    (Springer Science+Business Media, 1978) N.V. Joshi; J. Aponte
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    Effects of Fe Impurity in Vibrational Modes of CuInS<sub>2</sub>
    (Institute of Physics, 1981) N.V. Joshi
    Lattice dynamical behaviour of CuInS 2 with Fe impurity has been examined at 4.2 K by using Fourier transform spectroscopy. The observed modes are indentified. The mode located at 106 cm -1 is analysed by using a molecular model and was found to be originated by the Fe impurity at In sites. The peak situated at 155 cm -1 could not be explained with a one phonon excitation process and hence it is tentatively attributed to a two phonons absorption of the \varGamma 4 mode or a combination mode of two TO modes.