Hardness and elasticity in cubic ruthenium dioxide

Le´ger, J. M.; Djemia, P.; Ganot, F.; Haines, J.; Pereira, A. S.; da Jornada, J. A. H.
October 2001
Applied Physics Letters;10/1/2001, Vol. 79 Issue 14, p2169
Academic Journal
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.


Related Articles

  • Mechanical Characterization of Ruthenocuprates by Nanoindentation Technique. Alp, Utkan; Yılmaz, Fikret; Uzun, Orhan; Topal, Uğur; Ergen, Semra; Kölemen, Uğur // Journal of Superconductivity & Novel Magnetism;Feb2015, Vol. 28 Issue 2, p519 

    The nanomechanical properties of RuSr RECu O (RE = Eu, Gd and Ho) prepared by ammonium nitrate melt technique (ANMT) were investigated using nanoindentation technique. The indentation load-displacement curves of the samples were obtained at different peak loads ranging from 10 to 400 mN. Reduced...

  • AVERAGE RESONANCE PARAMETERS OF RUTHENIUM AND PALLADIUM NUCLEI. Pravdivy, M. M.; Korzh, I. O.; Sklyar, M. T. // Nuclear Physics & Atomic Energy;2012, Vol. 13 Issue 1, p11 

    Full sets of the average resonance parameters S0, S1, ' 0R , ' 1R , S1,3/2 for ruthenium and palladium nuclei with natural mixture of isotopes are determined by means of the method designed by authors. The determination is realized from analysis of the average experimental differential cross...

  • New expanding cavity model for indentation hardness including strain-hardening and indentation size effects.  // Journal of Materials Research;May2006, Vol. 21 Issue 5, p24 

    An expanding cavity model (ECM) for determining indentation hardness of elastic-strain-hardening plastic materials is developed. The derivation is based on a strain gradient plasticity solution for an internally pressurized thick-walled spherical shell of an elastic linear-hardening material....

  • Nanoindentation mapping of a wood-adhesive bond. Konnerth, J.; Valla, A.; Gindl, W. // Applied Physics A: Materials Science & Processing;Aug2007, Vol. 88 Issue 2, p371 

    A mapping experiment of a wood phenol–resorcinol–formaldehyde adhesive bond was performed by means of grid nanoindentation. The variability of the modulus of elasticity and the hardness was evaluated for an area of 17 μm by 90 μm. Overall, the modulus of elasticity of the...

  • Theoretical calculations for structural, elastic, and thermodynamic properties of RuN2 under high pressure. Bing Dong; Xiao-Lin Zhou; Ke Liu; Jing Chang // Journal of Applied Physics;2014, Vol. 116 Issue 5, p053511-1 

    The structural and elastic properties of RuN2 were investigated through the first-principles calculation using generalized gradient approximation (GGA) and local density approximation (LDA) within the plane-wave pseudopotential density functional theory. The obtained equilibrium structure and...

  • First principles study on structural, electronic, elastic and mechanical properties of RuAl1-xGex alloys using special quasirandom structure. Fatima, Bushra; Acharya, Nikita; Chouhan, Sunil Singh; Sanyal, Sankar P. // AIP Conference Proceedings;Jun2013, Vol. 1536 Issue 1, p413 

    We developed the special quasirandom structure to study the structural, electronic, elastic and mechanical properties of RuAl1-xGex for different composition (x= 0.25, 0.50, 0.75 and 1) using Density Functional (FP-LAPW) method. The exchange and correlation potential is treated by the...

  • Nano-range mechanical characteristics of carnallite, spathic salt and sylvite. Aptukov, V.; Mitin, V.; Moloshtanova, N.; Morozov, I. // Journal of Mining Science;May2013, Vol. 49 Issue 3, p382 

    The authors discuss experimental nano-indentation results obtained on carnallite, spathic salt and sylvite grains on Dimension ICON scanning probe microscope, as well as comparative assessments of elasticity modulus and hardness of the minerals.

  • A study of indentation work in homogeneous materials. Mengxi Tan // Journal of Materials Research;Jun2006, Vol. 21 Issue 6, p4 

    The work of indentation is investigated experimentally in this article. A method of using the elastic energy to extract the elastic modulus is proposed and verified. Two types of hardness related to the work of indentation are defined and examined: Hwt is defined as the total work required...

  • Ab initio calculation of the structural and elastic properties, anisotropy, and hardness of nitrogen-doped diamond. Ivanova, T.; Mavrin, B. // Crystallography Reports;Jan2014, Vol. 59 Issue 1, p93 

    The elastic properties of nitrogen-doped diamond are studied with the use of the density functional theory in the plane-wave basis, the electron density gradient approximation, and ultrasoft pseudopotentials. It is established that doping increases the lattice parameter and decreases the elastic...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics