Volume 40, Number 5, December I 1997
|Page(s)||527 - 532|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Impacts of GeV heavy ions in amorphous metallic alloys investigated by near-field scanning microscopy
Laboratoire de Physique de la Matière Condensée (CNRS-ERS 5646
) SNCMP, INSA - Complexe Scientifique de Rangueil, 31077 Toulouse, France
2 CIRIL, rue Claude Bloch, B. P. 5133, 14040 Caen cedex, France
3 Institute for General Physics, Eötvös University Museum krt 6-8, H-1088 Budapest, Hungary
4 Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse IN2P3-CNRS, Bât 108, 91405 Orsay, France
Accepted: 21 October 1997
The modifications of the surface topography of amorphous metallic alloys irradiated with swift heavy ions are for the first time studied by near-field microscopy techniques. Irradiations with Pb or U ions (high ( values) lead to the formation of hillocks surrounded by hollows, whereas no visible modifications of the specimen surface is observed after irradiation with Kr ions (low ( value). The formation of hillocks can be ascribed to the damage created in individual ion tracks, while hollows would be linked to the occurrence of the anisotropic-growth phenomenon. Both processes are induced by severe electronic excitation in the wake of incident ions.
PACS: 61.80.Jh – Ion radiation effects / 61.80.-x – Physical radiation effects, radiation damage / 61.43.Dq – Amorphous semiconductors, metals, and alloys
© EDP Sciences, 1997
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