0000000000485349

AUTHOR

J. Laakkonen

showing 2 related works from this author

Positron trapping rate into vacancy clusters

1979

The trapping rate of positrons into vacancy clusters in metals has been calculated. It increases with the trap size and binding energy and approximately scales with the number of vacancies in small clusters. The phonon-mediated contribution to the trapping rate is small. The temperature dependence of the trapping process is discussed.

Condensed Matter::Quantum GasesCondensed Matter::Materials SciencePositronChemistryVacancy defectBinding energyGeneral EngineeringGeneral Materials SciencePhysics::Atomic PhysicsGeneral ChemistryTrappingAtomic physicsPositron trappingApplied Physics
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The resistivity and thermopower of amorphous Mg-Zn alloys

1983

The resistivity and thermopower of amorphous Mg-Zn alloys have been computed as a function of temperature and composition. The diffraction model incorporating the dynamical partial structure factors is applied. The effect of the electron mean free path is investigated. The authors find that the resistivity is well described by the model, and that the inclusion of the mean free path does not change the results considerably. In the case of thermopower the diffraction model turns out to be inadequate: it gives a composition dependence which is against the experimental evidence. This suggests that there exists another scattering mechanism, which is not accounted for by the diffraction model. Th…

Electron mean free pathMaterials sciencePhysics and Astronomy (miscellaneous)Condensed matter physicsElectrical resistivity and conductivityMean free pathScatteringComposition dependenceSeebeck coefficientMetals and AlloysGeneral EngineeringFunction (mathematics)Amorphous solidJournal of Physics F: Metal Physics
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