Aggregated diamond nanorods, the densest and least compressible form of carbon
Abstract
We report the synthesis of aggregated diamond nanorods (ADNRs) from fullerene C60 at 20(1) GPa and 2200 °C using a multianvil apparatus. Individual diamond nanoroads are of 5-20 nm in diameter and longer than 1μm. The x-ray and measured density of ADNRs is ∼0.2%-0.4% higher than that of usual diamond. The extremely high isothermal bulk modulus KT=491(3)GPa [compare to KT=442(4)GPa of diamond] was obtained by in situ x-ray diffraction study. Thus, ADNRs is the densest among all carbon materials and it has the lowest so far experimentally determined compressibility.
- Publication:
-
Applied Physics Letters
- Pub Date:
- August 2005
- DOI:
- Bibcode:
- 2005ApPhL..87h3106D
- Keywords:
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- 81.05.Uw;
- 62.20.Fe;
- 81.40.Lm;
- 62.20.Dc;
- 81.40.Jj;
- 62.50.+p;
- 81.40.Vw;
- 81.07.-b;
- 81.16.-c;
- 61.46.+w;
- Carbon diamond graphite;
- Deformation and plasticity;
- Deformation plasticity and creep;
- Elasticity elastic constants;
- Elasticity and anelasticity stress-strain relations;
- High-pressure and shock wave effects in solids and liquids;
- Pressure treatment;
- Nanoscale materials and structures: fabrication and characterization;
- Methods of nanofabrication and processing