Hardness and elasticity in cubic ruthenium dioxide

被引：39
作者：
Léger, JM
Djemia, P
Ganot, F
Haines, J
Pereira, AS
da Jornada, JAH
机构：
[1] Univ Paris 13, CNRS, Lab Proprietes Mecan & Thermodynam Mat, F-93430 Villetaneuse, France
[2] Univ Montpellier 2, CNRS, Lab Physicochim Mat Condensee, F-34095 Montpellier, France
[3] UFRGS, Escola Engn, BR-91501970 Porto Alegre, RS, Brazil
[4] UFRGS, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil
来源：
APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 14期
关键词：
D O I：
10.1063/1.1401786
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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-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. (C) 2001 American Institute of Physics.
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收藏
页码：2169 / 2171
页数：3
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