Real-time hot-stage high-voltage transmission electron microscopy precipitation of CdS nanocrystals in glasses: Experiment and theoretical analysis

Li Chi Liu, Subhash H. Risbud

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Abstract

Hot-stage high-voltage (1.5 MeV) transmission electron microscopy was used to directly observe CdS nanocrystals precipitated in a silicate glass and a theoretical framework of nanocrystal coarsening kinetics more appropriate than the popularly used Lifshitz-Slyozov-Wagner theory was developed. Nanocrystallite nucleation and coarsening were monitored in situ by video taping of bright-field images of the edges of thin (less than 2 μm) glass fragments heated in the hot stage; crystallite size distribution was obtained from the taped experimental observations. The effects of electron-beam heating and diffusion out of the nanocrystals were included in developing the theoretical analysis of coarsening kinetics which were used, in turn, to interpret the experimental size distribution curves.

Original languageEnglish
Pages (from-to)4576-4580
Number of pages5
JournalJournal of Applied Physics
Volume76
Issue number8
DOIs
Publication statusPublished - 1994 Dec 1

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high voltages
nanocrystals
transmission electron microscopy
glass
kinetics
silicates
fragments
nucleation
electron beams
heating
curves

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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