TITLE

Hardness and elasticity in cubic ruthenium dioxide

AUTHOR(S)
Le´ger, J. M.; Djemia, P.; Ganot, F.; Haines, J.; Pereira, A. S.; da Jornada, J. A. H.
PUB. DATE
October 2001
SOURCE
Applied Physics Letters;10/1/2001, Vol. 79 Issue 14, p2169
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The Knoop hardness of the highly incompressible cubic phase of ruthenium dioxide was found to be 19–20 GPa from indentation tests. This value scales well with the shear modulus approximated by the elastic constant C[sub 44] of 144 GPa obtained from Brillouin scattering measurements. This work provides evidence that the shear modulus is a better indicator of hardness than the bulk modulus for ionic and covalent materials. © 2001 American Institute of Physics.
ACCESSION #
5227961

 

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