Published August 22, 1977
| Version v1
Journal article
Formation and migration energies of monovacancies in tantalum
- 1. Universitaet Stuttgart, Institut fuer Theoretische und Angewandte Physik, Stuttgart, Germany
Description
Vacancies in thermal equilibrium were investigated by measuring the Doppler broadening of the 2γ positron-annihilation line of Ta from 35 K to the melting temperature. Experimental evidence for detrapping of positrons from vacancies at high temperatures was found. The consequences of the values obtained for monovacancy-formation and -migration enthalpies, H/sub IV//sup F/ approx. = 2.2 eV, H/sub IV//sup M/ = approx. = 1.9 eV, for the interpretation of radiation damage and cold-work experiments are discussed
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 39
- Journal Issue
- 8
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 484-487
- ISSN
- 0031-9007
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 9351776
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- COLD WORKING; DOPPLER BROADENING; ELECTRON-POSITRON COLLISIONS; FORMATION FREE ENTHALPY; INTERSTITIALS; MIGRATION LENGTH; PHYSICAL RADIATION EFFECTS; RECOMBINATION; TANTALUM; TEMPERATURE DEPENDENCE; TRAPPING; ULTRAHIGH VACUUM; VACANCIES
- Descriptors DEC
- COLLISIONS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELECTRON COLLISIONS; ELEMENTS; ENERGY; FABRICATION; FREE ENTHALPY; LINE BROADENING; MATERIALS WORKING; METALS; PHYSICAL PROPERTIES; POINT DEFECTS; POSITRON COLLISIONS; RADIATION EFFECTS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENTS
Optional Information
- Notes
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