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Journal articles
Amorphisation of ZnAl2O4 spinel under heavy ion irradiation
Abstract : ZnAl2O4 spinels have been irradiated with several ions (Ne, S, Kr and Xe) at the IRRSUD beamline of the GANIL facility, in order to determine irradiation conditions (stopping power, fluence) for amorphisation. We observed by transmission electron microscopy (TEM) that with Xe ions at 92 MeV, individual ion tracks are still crystalline, whereas an amorphisation starts below a fluence of 5 x 1012 cm-2 up to a total amorphisation between 1 x 1013 and 1 x 1014 cm-2. The coexistence of amorphous and crystalline domains in the same pristine grain is clearly visible in the TEM images. All the crystalline domains remain close to the same orientation as the original grain. According to TEM and X-ray Diffraction (XRD) results, the stopping power threshold for amorphisation is between 9 and 12 keV nm-1.
https://hal-cea.archives-ouvertes.fr/cea-00375384
Contributor : Chantal Brassy Connect in order to contact the contributor
Submitted on : Tuesday, April 14, 2009 - 5:14:11 PM
Last modification on : Tuesday, October 19, 2021 - 11:34:34 PM
Contributor : Chantal Brassy Connect in order to contact the contributor
Submitted on : Tuesday, April 14, 2009 - 5:14:11 PM
Last modification on : Tuesday, October 19, 2021 - 11:34:34 PM