Transition-metal dioxides with a bulk modulus comparable to diamond
- 1 March 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 57 (9), 4979-4982
- https://doi.org/10.1103/physrevb.57.4979
Abstract
Recently it has been reported that a high-pressure cubic phase of ruthenium dioxide has an unusually large bulk modulus, and consequently is a most interesting candidate as a very hard material. Based on ab initio calculations it is shown that the high bulk modulus is a result of a strong covalent bonding between ruthenium states and oxygen states in combination with the favorable geometry of the orbitals in the fluorite structure. In addition an even higher bulk modulus is predicted for the isoelectronic and isostructural compound
Keywords
This publication has 8 references indexed in Scilit:
- Pa 3̅ Modified Fluorite-Type Structures in Metal Dioxides at High PressureScience, 1996
- Materials potentially harder than diamond: Quenchable high-pressure phases of transition metal dioxidesJournal of Materials Science Letters, 1994
- Phase transitions in ruthenium dioxide up to 40 GPa: Mechanism for the rutile-to-fluorite phase transformation and a model for the high-pressure behavior of stishovitePhysical Review B, 1993
- Elastic Modulus, Vickers Hardness and Fracture Toughness of MO·2B2O3 (M=Ca, Sr, Ba) and M2O·2B2O3 (M=Li, Na, K) GlassesJournal of the Japan Institute of Metals and Materials, 1989
- Structural and electronic properties of WCPhysical Review B, 1988
- Microhardness scaling and bulk modulus‐microhardness relationship in AIIBIVC chalcopyrite compoundsCrystal Research and Technology, 1988
- Synthesis of band and model Hamiltonian theory for hybridizing cerium systemsPhysical Review B, 1987
- Finite Elastic Strain of Cubic CrystalsPhysical Review B, 1947