Abstract
The farinfrared properties of mixed alkalai halide crystals, K1−xRbxI, x=0.25 and 0.50, have been studied at room temperature. Dispersive Fourier transform spectroscopy (DFTS) has been used to obtain the complex dielectric function of these samples. Infrared-active phonon modes are observed at frequencies close to those of KI and RbI. This two-mode behavior is in agreement with theoretical predictions.
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References
M. Lucovsky, M. Brodsky and E. Burnstein, inLocalized Excitations in Solids, edited by R.F. Walis (Plenum Press Inc, New York, 1968), 192.
I.F. Chang and S.S. Mitra, Adv. Phys.20, 359 (1971).
I.F. Chang and S.S. Mitra, Phys. Rev.172, 925 (1968).
L. Genzel and W. Banhofer, 2. PhysicaB25, 13 (1976).
I.G. Nolt, R.A. Westwig, R.W. Alexander, Jr. and A.J. Sievers, Phy. Rev.157, 730 (1967).
L. Genzel, T.P. Martin, and C.H. Perry, Phy. Stat. Sol. (b)62, 83 (1976).
J.H. Fertal, C.H. Perry, Phys. Rev.184, 874 (1969).
B. Renker, N.M. Butt and N.E. Massa, Phys. Rev. B27, 1450 (1983).
E.E. Rusell and E.E. Bell, Infrared Physics6, 75 (1966).
R.J. Bell,Introductory Fourier Transform Spectroscopy (Academic Press, New York, 1972).
J.R. Birch and T.J. Parker, Infrared and Millimeter Waves Vol. II (edited by K.J. Button) Academic Press, New York (1979).
A. Memon and D.B. Tanner, Int. J. Infrared and Millimeter Waves5, 1009 (1984).
A. Memon and D.B. Tanner, Phys. Stat. Sol. (b) 128, 49 (1985).
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Memon, A., Tanner, D.B. Far infrared study of optical phonons in K1−xRbxI mixed crystals. Int J Infrared Milli Waves 7, 1805–1811 (1986). https://doi.org/10.1007/BF01010078
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DOI: https://doi.org/10.1007/BF01010078