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Scattering and Annihilation of Positrons in Magnetically Ordered Samples
Author(s) -
Szuszkiewicz S.
Publication year - 1991
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221650235
Subject(s) - spins , annihilation , antiparallel (mathematics) , positron , scattering , electron , physics , atomic physics , nuclear physics , condensed matter physics , magnetic field , quantum mechanics
Abstract Measurements are made of the angular distributions of annihilation quanta for metallic glass (CoFe) 74 (MnMoSiB) 26 samples. It is found that if the spins of annihilating particles are antiparallel, the number of two‐quantum annihilation acts with 3d‐like electrons increase at about 7%. The measurements are also performed for the counting rate of coincidences for tH = 0 as a function of B. A change of the counting rate with the change of the direction of the ordering of the sample indicates the change of number of scattered positrons. However the scattering depends on the electron and positron spins.