Comparison of Grain Boundary Structure in Metals and Semiconductors as Probed by Positrons

• Authors: J. Kuriplach
• Languages of publication: EN

Abstracts

EN

Vacancy behavior and positron trapping at selected grain boundaries in iron, nickel, and zirconia are investigated theoretically. It is found that the grain boundary vacancy loses its free volume in metals at moderate temperatures whereas it is kept up to very high temperatures in zirconia. The consequences of these findings for positron annihilation studies of nanocrystalline materials are discussed.

Keywords

EN

71.60.+z; 61.72.Mm; 61.72.J-; 78.70.Bj

Discipline

• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)
• 71.60.+z: Positron states(for positron annihilation, see 78.70.Bj)
• 61.72.Mm: Grain and twin boundaries
• 61.72.J-: Point defects and defect clusters

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 3
• Pages: 722-725

Dates

published

2014-03

Contributors

author

J. Kuriplach

• Department of Low Temperature Physics, Faculty of Mathematics and Physics, Charles University in Prague V Holešovičkách 2, CZ-180 00 Prague, Czech Republic

References

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Identifiers

DOI

10.12693/APhysPolA.125.722