ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
We have used Raman scattering to explore finite size effects in the phase transition of 300 A(ring) colloidal microcrystallites of CdS. By measuring the shifts in LO phonon frequencies as a function of pressure we conclude that these small microcrystallites undergo a well-defined first order phase transition similar to the one occurring in bulk CdS. However, the phase transformation in the colloids exhibits a smaller hysteresis, which we attribute to efficient annealing of defects in the high surface area colloidal material.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.453969
Permalink