Nucleation of Ga2O3 nanocrystals in the K2O-Ga2O3-SiO2 glass system

R. Ceccato, R. Dal Maschio, S. Gialanella, G. Mariotto*, M. Montagna, F. Rossi, M. Ferrari, K. E. Lipinska-Kalita, Y. Ohki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


A multitechnique approach, consisting of x-ray diffraction, differential thermal analysis, low frequency Raman scattering from the acoustic vibrations of nanoclusters, and transmission electron microscopy associated with selected area diffraction, has been used to study the nucleation and crystallization processes in SiO2-Ga2O3-K2O glasses. The specific aim was to determine the structure and the size distribution of nanoparticles embedded in the glass matrix. It has been found that nearly spherical nanocrystals of β-Ga2O3, with a size of ∼2-3 nm, nucleate during thermal treatments at 900°C. Crystallization was observed after annealing at higher temperature. The amount of the crystalline phase and the mean size of the nanocrystals increased with heat treatment, time and temperature. β-Ga2O3 was the only crystalline phase to appear in all glass samples.

Original languageEnglish
Pages (from-to)2522-2527
Number of pages6
JournalJournal of Applied Physics
Issue number5
Publication statusPublished - 2001 Sept 1

ASJC Scopus subject areas

  • General Physics and Astronomy


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