Size and temperature dependence of nanodiamond–nanographite transition related with surface stress

• Published in: Diamond and related materials Vol. 11; no. 2; pp. 234 - 236
• Main Authors: Zhao, D.S., Zhao, M., Jiang, Q.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2002; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Diamond; Equations of state, phase equilibria, and phase transitions; Exact sciences and technology; Grain Size; Graphite; Materials science; Nanoscale materials and structures: fabrication and characterization; Physics; Solid-solid transitions; Specific phase transitions; Temperatures; Temperatures; Grain Size; Diamond; Graphite; Grain size; Phase diagrams; Synthetic mineral; Phase transformations; Diamonds; Theoretical study; Nanostructures; Carbon; Thermal stability; Temperature effects; Nonmetals; Size effect; Models; Nanocrystal
• ISSN: 0925-9635; 1879-0062
• DOI: 10.1016/S0925-9635(01)00694-X

A model for the equilibrium transition size and temperature between nanodiamond and nanographite was established in terms of the effect of surface stress on the internal pressure of nanocrystals. It was found that as size and temperature decreased, the relative stability of diamond in comparison with graphite increased. The obtained result is consistent with other theoretical and experimental results.