A transmission electron microscopy study of xenon bubbles in ion-implanted tin

D. R.G. Mitchell, S. E. Donnelly, J. H. Evans

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This paper describes a transmission electron microscopy (TEM) study of a body-centred-tetragonal metal (β tin) after room temperature implantation with 40 keV xenon ions. At low to medium doses, dark-field microscopy showed that a large fraction of the bubbles present (those with diameters less than 5 nm) contained solid xenon precipitates. From the inferred bubble pressures, it was demonstrated that these bubbles were in equilibrium, as expected from the high homologous implant temperature. At the highest dose, a large range of bubble sizes was found with strongly facetted bubbles having edge lengths in excess of 100 nm. Further results were obtained using a microscope cooling holder to follow the freezing of xenon in medium and large sized bubbles. The details of the gas adsorption on the bubble facets was deduced and the xenon content of the larger bubbles estimated. Of particular interest was that the xenon content of the larger bubbles suggested that they were grossly underpressurized, in contrast with the coexisting small equilibrium bubbles. The bimodal nature of the bubbles is discussed using the critical radius concept within the framework of bias-driven cavity growth.

Original languageEnglish
Pages (from-to)531-542
Number of pages12
JournalPhilosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
Volume61
Issue number4
DOIs
Publication statusPublished - 1 Jan 1990
Externally publishedYes

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Xenon
Tin
xenon
tin
bubbles
Ions
Transmission electron microscopy
transmission electron microscopy
ions
Gas adsorption
Freezing
Ion implantation
Precipitates
Microscopic examination
Microscopes
Metals
Cooling
Temperature
dosage
holders

Cite this

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title = "A transmission electron microscopy study of xenon bubbles in ion-implanted tin",
abstract = "This paper describes a transmission electron microscopy (TEM) study of a body-centred-tetragonal metal (β tin) after room temperature implantation with 40 keV xenon ions. At low to medium doses, dark-field microscopy showed that a large fraction of the bubbles present (those with diameters less than 5 nm) contained solid xenon precipitates. From the inferred bubble pressures, it was demonstrated that these bubbles were in equilibrium, as expected from the high homologous implant temperature. At the highest dose, a large range of bubble sizes was found with strongly facetted bubbles having edge lengths in excess of 100 nm. Further results were obtained using a microscope cooling holder to follow the freezing of xenon in medium and large sized bubbles. The details of the gas adsorption on the bubble facets was deduced and the xenon content of the larger bubbles estimated. Of particular interest was that the xenon content of the larger bubbles suggested that they were grossly underpressurized, in contrast with the coexisting small equilibrium bubbles. The bimodal nature of the bubbles is discussed using the critical radius concept within the framework of bias-driven cavity growth.",
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A transmission electron microscopy study of xenon bubbles in ion-implanted tin. / Mitchell, D. R.G.; Donnelly, S. E.; Evans, J. H.

In: Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties, Vol. 61, No. 4, 01.01.1990, p. 531-542.

Research output: Contribution to journalArticle

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AU - Mitchell, D. R.G.

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AU - Evans, J. H.

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