期刊
PHYSICAL REVIEW LETTERS
卷 105, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.095701
关键词
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资金
- NSF [MRI-0821584, EAR-0810255]
- International Balzan Foundation
- U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES) [DE-SC0001057]
- CIW
- CDAC
- UNLV
- DOE-NNSA
- DOE-BES
- NSF
- NSFC [10979001]
- National Basic Research Program of China [2005CB724400]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [805056] Funding Source: National Science Foundation
Y2O3 with particle sizes ranging from 5 nm to 1 mu m were studied at high pressure using x-ray diffraction and Raman spectroscopy techniques. Nanometer-sized Y2O3 particles are shown to be more stable than their bulk counterparts, and a grain size-dependent crystalline-amorphous transition was discovered in these materials. High-energy atomic pair distribution function measurements reveal that the amorphization is associated with the breakdown of the long-rang order of the YO6 octahedra, while the nearest-neighbor edge-shared octahedral linkages are preserved.
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