The effect of 835 MeV Kr irradiation at 90 K on a stable icosahedral quasicrystal (Al65Cu25Fe5V5) is discussed here. A Kr-bearn of this energy was chosen in order to keep the stopping power similar to 1300 eV/Angstrom in accordance with our previous work Nucl. Instrum. Meth. B, 156 (1999) 201, while increasing the travelled path in which strong electronic excitations occur (much greater than sample thickness). The ratio rho(phi)/rho (0) {resistivity at fluence phi /resistivity at zero fluence} of quasicrystal goes through oscillatory changes, up to similar to 1 X 10(12) ions/cm(2) where this ratio drops considerably. The ex situ XRD on the irradiated samples however shows the evidence of degradation of the structure after a critical fluence of 1 X 10(11) ions/cm(2). From the ex situ XRD measurements, this degradation does not seem to increase with further fluence up to phi = 1 X 10(13) ions/cm(2). (C) 2001 Elsevier Science Ltd. All rights reserved. References: 15
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