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Positron annihilation in thermally treated metallic glasses
Author(s) -
Liolios An.,
Dedoussis Sp.,
Chardalas M.,
Charalambous Ste F.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170221126
Subject(s) - annealing (glass) , positron annihilation , crystallization , materials science , crystallite , amorphous metal , metalloid , positron , metal , transition metal , annihilation , metallurgy , thermodynamics , nuclear physics , chemistry , physics , biochemistry , alloy , catalysis , electron
The positron lifetime dependence on the annealing temperature has been studied for two transition metal‐metalloid glasses (FeNi‐based and Co‐based). Small variations of the lifetime observed after annealing below crystallization temperature are attributed to elimination of the structural defects inherent in the as‐quenched metallic glasses. More abrupt changes at higher temperatures are ascribed to crystallization processes which lead to polycrystalline phases. Differences in positron lifetime between annealed FeNi‐based and Co‐based metallic glasses are discussed.