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Abstract The low temperature specific heat of boron carbide exhibits characteristic deviations from the classical Debye model (c ∝ T3). Including α-rhombohedral boron, the degree of deviations from this model is proportional… Click to show full abstract
Abstract The low temperature specific heat of boron carbide exhibits characteristic deviations from the classical Debye model (c ∝ T3). Including α-rhombohedral boron, the degree of deviations from this model is proportional to the concentration of B(3) voids in the structure and to the content of B11C icosahedra, respectively. The observed effects of specific structural defects can be described in accordance with the model of voids in amorphous Si proposed by Nakhmanson and Drabold. Results of β-rhombohedral boron, largely corresponding to the Debye model, are used for comparison.
Journal Title: Solid State Sciences
Year Published: 2020
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