Hardness and bounding in A15 superconducting compounds
- 1 July 1978
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 33 (1), 103-105
- https://doi.org/10.1063/1.90170
Abstract
Microhardness of single crystals of V3Si and V3Ge as well as polycrystalline Nb3Ir, Nb3Au, and Nb3Sn have been measured. The relatively high ratio of hardness to elastic constant C44 supports the existence of strong covalency in A3B compounds of the A15 structure. Correlation with interatomic distance suggests covalent bonding (tight binding) in the A‐A chains.Keywords
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