Lattice parameter evolution in Pt nanoparticles during photo-thermally induced sintering and grain growth
Abstract
An in-situ optical pump/x-ray probe technique has been used to study the size dependent lattice parameter of Pt nanoparticles subjected to picosecond duration optical laser pulses. The as-prepared Pt nanoparticles exhibited a contracted lattice parameter consistent with the response of an isolated elastic sphere to a compressive surface stress. During photo-thermally induced sintering and grain growth, however, the Pt lattice parameter did not evolve with the inverse particle size dependence predicted by simple surface stress models. Lastly, the observed behavior could be attributed to the combined effects of a compressive surface/interface stress and a tensile stress arising from intergranular material.
- Authors:
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Institutes of Health (NIH); National Science Foundation (NSF)
- OSTI Identifier:
- 1367892
- Alternate Identifier(s):
- OSTI ID: 1413389
- Grant/Contract Number:
- AC02-06CH11357; DMR140076; R24GM111072
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Physics and Chemistry of Solids
- Additional Journal Information:
- Journal Volume: 108; Journal Issue: C; Journal ID: ISSN 0022-3697
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY; Laser annealing; Intergranular stress; Lattice parameter; Nanostructured materials; Surface/interface stress
Citation Formats
Kelly, B. G., Loether, A., DiChiara, A. D., Henning, R., DeCamp, M. F., and Unruh, K. M. Lattice parameter evolution in Pt nanoparticles during photo-thermally induced sintering and grain growth. United States: N. p., 2017.
Web. doi:10.1016/j.jpcs.2017.04.009.
Kelly, B. G., Loether, A., DiChiara, A. D., Henning, R., DeCamp, M. F., & Unruh, K. M. Lattice parameter evolution in Pt nanoparticles during photo-thermally induced sintering and grain growth. United States. https://doi.org/10.1016/j.jpcs.2017.04.009
Kelly, B. G., Loether, A., DiChiara, A. D., Henning, R., DeCamp, M. F., and Unruh, K. M. Thu .
"Lattice parameter evolution in Pt nanoparticles during photo-thermally induced sintering and grain growth". United States. https://doi.org/10.1016/j.jpcs.2017.04.009. https://www.osti.gov/servlets/purl/1367892.
@article{osti_1367892,
title = {Lattice parameter evolution in Pt nanoparticles during photo-thermally induced sintering and grain growth},
author = {Kelly, B. G. and Loether, A. and DiChiara, A. D. and Henning, R. and DeCamp, M. F. and Unruh, K. M.},
abstractNote = {An in-situ optical pump/x-ray probe technique has been used to study the size dependent lattice parameter of Pt nanoparticles subjected to picosecond duration optical laser pulses. The as-prepared Pt nanoparticles exhibited a contracted lattice parameter consistent with the response of an isolated elastic sphere to a compressive surface stress. During photo-thermally induced sintering and grain growth, however, the Pt lattice parameter did not evolve with the inverse particle size dependence predicted by simple surface stress models. Lastly, the observed behavior could be attributed to the combined effects of a compressive surface/interface stress and a tensile stress arising from intergranular material.},
doi = {10.1016/j.jpcs.2017.04.009},
journal = {Journal of Physics and Chemistry of Solids},
number = C,
volume = 108,
place = {United States},
year = {Thu Apr 20 00:00:00 EDT 2017},
month = {Thu Apr 20 00:00:00 EDT 2017}
}
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