The effects of electron irradiation upon icosahedral Mg26Zn64Ho10 quasicrystals were investigated by making simultaneous measurements of the positron lifetime and the 2-detector coincident Doppler broadening spectra at room temperature. Irradiation-induced vacancies could be detected, via their agglomeration due to annealing effects at room temperature, by positron lifetime measurements.

Vacancies in Quasicrystals - Effects of Electron Irradiation. K.Sato, F.Baier, W.Sprengel, H.E.Schaefer: Physical Review B, 2002, 66[9], 092201 (3pp)