Size-dependent amorphization of nanoscale Y2O3 at high pressure
Journal Article
·
· Phys. Rev. Lett.
- Carnegie Inst. of Washington, Argonne, IL (United States); Jilin Univ., Changchun (China)
- Carnegie Inst. of Washington, Argonne, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Xiangtan Univ., (China)
- Jilin Univ., Changchun (China)
- Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Y2 O3 with particle sizes ranging from 5 nm to 1 μm were studied at high pressure using x-ray diffraction and Raman spectroscopy techniques. Nanometer-sized Y2 O3 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.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- DOE Contract Number:
- SC0001057
- OSTI ID:
- 1065301
- Journal Information:
- Phys. Rev. Lett., Vol. 105; Related Information: EFree partners with Carnegie Institution of Washington (lead); California Institute of Technology; Colorado School of Mines; Cornell University; Lehigh University; Pennsylvania State University
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
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