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Titolo:
Ion-beam mixing in energetic collision cascades: Thermal-spike model and experiments
Autore:
Park, B; Lee, H;
Indirizzi:
Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151742, South Korea Seoul Natl Univ Seoul South Korea 151742 Engn, Seoul 151742, South Korea Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA Georgia Inst Technol Atlanta GA USA 30332 i & Engn, Atlanta, GA 30332 USA
Titolo Testata:
JOURNAL OF MATERIALS RESEARCH
fascicolo: 1, volume: 14, anno: 1999,
pagine: 281 - 285
SICI:
0884-2914(199901)14:1<281:IMIECC>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
DISPLACEMENT CASCADES; ACTIVATED PROCESSES; Z METALS; TEMPERATURE; DYNAMICS; DENSITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
--discip_EC--
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Park, B Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151742, South Korea Seoul Natl Univ Seoul South Korea 151742 oul 151742, South Korea
Citazione:
B. Park e H. Lee, "Ion-beam mixing in energetic collision cascades: Thermal-spike model and experiments", J MATER RES, 14(1), 1999, pp. 281-285

Abstract

A phenomenological model of ion-beam mixing during energetic collision cascades is developed, based on the concept of a thermal spike, to correctly predict that the mixing rate Dr depends linearly on nuclear stopping power (instead of a power-law dependence), and is correlated with a heat of mixing(analogous to Darken's relation). Previous ion-beam mixing experiments from 25 different metallic bilayers agree well with the model's predictions: mixing rates (Dt)/(ion-dose) similar to 1 nm(4), and an activation enthalpy of approximately 1 eV for atomic diffusion in liquid-like cascades.

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Documento generato il 27/05/20 alle ore 15:52:36