Diminished medium-range order observed in annealed amorphous germanium

J. M. Gibson, Michael Treacy

Research output: Contribution to journalArticle

142 Citations (Scopus)

Abstract

We use variable coherence transmission electron microscopy to examine medium-range ordering in vacuum-deposited amorphous germanium. The method accesses higher-order atomic correlations through statistical analysis of hollow-cone dark-field image speckle. This yields greater sensitivity to medium-range order than the familiar pair correlation function obtained from diffraction. We find that thermal annealing of amorphous germanium reduces the degree of medium-range order, affirming the thermodynamic stability of the random network.

Original languageEnglish (US)
Pages (from-to)1074-1077
Number of pages4
JournalPhysical Review Letters
Volume78
Issue number6
StatePublished - 1997
Externally publishedYes

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germanium
statistical analysis
hollow
cones
thermodynamics
vacuum
transmission electron microscopy
annealing
sensitivity
diffraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Diminished medium-range order observed in annealed amorphous germanium. / Gibson, J. M.; Treacy, Michael.

In: Physical Review Letters, Vol. 78, No. 6, 1997, p. 1074-1077.

Research output: Contribution to journalArticle

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