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Specific heat capacity of molybdenum chalcogenides. IV. An investigation of the heat capacity of binary and halogen-substituted molybdenum chalcogenides

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Results of heat capacity measurements of Mo6X8 and Mo6X6Y2 compounds (X = 5, Se, and Te; Y = Br and I) in the temperature range from 2 to 30 K and in a magnetic field of 50 kG are reported and discussed. The analysis of the C results is done on the basis of a lattice term composed of two Debye functions and one βT 3 term. The characteristic frequencies for the phonon spectrum show systematic changes dependent on the structural parameters and the composition of the samples. The results obtained could be supplemented by means of Raman spectra. The determined γ coefficients exhibit an apparent correlation to T c. The results are discussed with consideration of the superconducting properties of the studied compounds.

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Author notes

  1. N. E. Alekseevskii & N. M. Dobrovolskii

    Present address: Institute for Physical Problems, Academy of Sciences, Moscow, USSR

  2. G. Wolf & C. Hohlfeld

    Present address: Sektion Chemie, Bergakademie Freiberg, Freiberg, GDR

Authors and Affiliations

  1. International Laboratory of High Magnetic Fields and Low Temperatures, Wrocŀaw, Poland

    N. E. Alekseevskii, G. Wolf, N. M. Dobrovolskii & C. Hohlfeld

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  1. N. E. Alekseevskii
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  2. G. Wolf
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  3. N. M. Dobrovolskii
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  4. C. Hohlfeld
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Alekseevskii, N.E., Wolf, G., Dobrovolskii, N.M. et al. Specific heat capacity of molybdenum chalcogenides. IV. An investigation of the heat capacity of binary and halogen-substituted molybdenum chalcogenides. J Low Temp Phys 38, 253–264 (1980). https://doi.org/10.1007/BF00115279

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  • DOI: https://doi.org/10.1007/BF00115279

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