Anomalous compressive behavior in CeO2 nanocubes under high pressure

Details Anomalous compressive behavior in CeO2 nanocubes under high pressure Anomalous compressive behavior in CeO2 nanocubes under high pressure

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008njph...10l3016g&link_type=abstract

New Journal of Physics, Volume 10, Issue 12, pp. 123016 (2008).

Physics

3

Scientific paper

High-pressure angle-dispersive x-ray diffraction measurements have been performed on bulk and nanocrystalline cubic CeO2 with mean sizes of 4.7 and 5.6 nm. It is found that the compressibility of the nanocrystals is lower than the bulk when a threshold pressure is reached. This critical pressure is found to be 10 GPa for 4.7 nm and 16 GPa for 5.6 nm CeO2 nanocubes. The particle size dependence of the threshold pressure for the hardening of CeO2 nanoparticles is quite unusual. First-principles electronic calculations show that the increased bulk modulus of the nanocrystal is due to the strengthening of the surface Ce-O bonds resulting in a much larger shear modulus than in the bulk and consequently hardening the shell surface.

Affiliated with

Also associated with

No associations

Rating

Anomalous compressive behavior in CeO2 nanocubes under high pressure does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Anomalous compressive behavior in CeO2 nanocubes under high pressure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anomalous compressive behavior in CeO2 nanocubes under high pressure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-794412