Low Temperature Specific Heat of BiOX (X = Cl, Br, and I) Single Crystals
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Low temperature specific heat of layered bismuth oxyhalide crystals has been studied in the temperature range from 2 to 50 K in zero and 8 T magnetic field. The expected Debye-like behaviour at the lowest temperatures (below 4-5 K) is established. Linear dependences of entropy and the Debye temperature as cross-correlation parameters are established. The small values of the Debye temperature and peculiarities of phonon spectra at lowest temperatures are discussed.
- 1. V.V. Bunda, S.O. Bunda, in: Physics of Electronic Materials, Vol. 2, 2nd Int. Conf. Proc. Kaluga (Russia) 2005, p. 134
- 2. O.L. Anderson, in: Physical Acoustics, Vol. III-B, Ed. W.P. Mason, Academic, New York 1965, p. 43
- 3. V.V. Bunda, S.A. Bunda, M. Kajňaková, A. Feher, E. Syrkin, S.B. Feodosyev, Low Temp. Phys., in press
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