Published October 1, 2002
| Version v1
Journal article
Particle-size effect on the compressibility of nanocrystalline alumina
- 1. Department of Physics, University of Missouri, Kansas City, Missouri 64110 (United States)
- 2. Department of Physics, University of California, Berkeley, California 94720 (United States)
- 3. Departments of Earth and Planetary Science and of Astronomy, University of California, Berkeley, California 94720 (United States)
Description
Room-temperature x-ray diffraction to 60 GPa yields zero-pressure bulk modulus values of K67=238±3 GPa and K37=172±3 GPa for nanocrystalline γ-alumina (Al2O3) with particle sizes of 67 and 37 nm, respectively. Combined with the results of previous high-pressure x-ray studies of 20 and 6 nm nanocrystalline Al2O3, it is found that compressibility increases with decreasing particle size. A new phase was detected at pressures above 51 and 56 GPa for γ-Al2O3 of 67 and 37 nm, respectively
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter and Materials Physics
- Journal Volume
- 66
- Journal Issue
- 14
- Journal Page Range
- p. 144101-144101.4
- ISSN
- 1098-0121
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36001320
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM OXIDES; COMPRESSIBILITY; NANOSTRUCTURES; PARTICLE SIZE; PRESSURE RANGE GIGA PA; X-RAY DIFFRACTION
- Descriptors DEC
- ALUMINIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; DIFFRACTION; MECHANICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PRESSURE RANGE; SCATTERING; SIZE
Optional Information
- Notes
- (c) 2002 The American Physical Society