Crystallite-size dependency of the pressure and temperature response in nanoparticles of magnesia
Journal Article
·
· Journal of Nanoparticle Research
We have carefully measured the hydrostatic compressibility and thermal expansion for a series of magnesia nanoparticles. We found a strong variance in these mechanical properties as crystallite size changed. For decreasing crystallite sizes, bulk modulus first increased, then reached a modest maximum of 165 GPa at an intermediate crystallite size of 14 nm, and then decreased thereafter to 77 GPa at 9 nm. Thermal expansion, meanwhile, decreased continuously to 70% of bulk value at 9 nm. These results are consistent to nano-ceria and together provide important insights into the thermal-mechanical structural properties of oxide nanoparticles.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI ID:
- 1375341
- Journal Information:
- Journal of Nanoparticle Research, Vol. 19, Issue 7; ISSN 1388-0764
- Publisher:
- Tsinghua University Press
- Country of Publication:
- United States
- Language:
- ENGLISH
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