TEM study of irradiation effects on tin oxide nanopowder

摘要: Abstract The effects of swift heavy ions in bulk materials have now long been studied and some models — such as the thermal spike developed order to explain observed phenomena. Nevertheless, questions remain debatable, among which following ones: i) What is spatial extension huge energy deposited by on target electrons? ii) Can we evidence a pressure effect due lattice temperature increase? In most cases, are able predict whether material may be sensitive or not electronic loss S e incident ion. According spike, given could all more density electrons high. Therefore, an interesting way increase this confine small grains (i.e. submicrometric grains). This work reports first experimental results obtained irradiated tin oxide (SnO 2 ) nanopowders. same TEM HREM before after lead ion irradiation at several fluences (from 0.3 7.5 × 10 12 Pb cm −2 ). A modification gradually appears fluence increases up critical above split into nanodomains. possible explanation through properties SnO .