• Kapil Dev

      Articles written in Pramana – Journal of Physics

    • Lattice specific heat and local density of states of Ni-based dilute alloys at low temperature

      P D Semalty Kapil Dev P N Ram

      More Details Abstract Fulltext PDF

      A detailed theoretical study of the low-temperature lattice specific heat of Ni-based dilute alloys has been carried out. Lattice Green’s function method has been used to calculate the local density of states of substitutional impurities and lattice specific heat in different alloys. The resonance condition has been investigated for possible occurrence of resonance modes. Except in NiCr and NiMn, low-frequency resonance modes have been obtained in all the alloys. However, no localized mode was obtained. The impurity-induced increase in lattice specific heat is explained on the basis of the obtained resonance modes. The calculation shows an excellent agreement with the measured lattice specific heat in these alloys

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