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Structural phase transformation in ZnS nanocrystalline thin films by swift heavy ion irradiation

✍ Scribed by Shiv P. Patel; A.K. Chawla; Ramesh Chandra; Jai Prakash; P.K. Kulriya; J.C. Pivin; D. Kanjilal; Lokendra Kumar

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 705 KB
Volume: 150
Category: Article
ISSN: 0038-1098
DOI: 10.1016/j.ssc.2010.03.017

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✦ Synopsis

a b s t r a c t Zinc sulfide (ZnS) thin films in zinc-blende (ZB) and wurtzite (W) phases have been fabricated by pulsed laser deposition. 150 MeV Ni ion beam irradiation has been carried out at different fluences ranging from 10 11 to 10 13 ions/cm 2 at room temperature for ion induced modifications. Structural phase transformation in ZnS from W to ZB phase is observed after high energy ion irradiation which leads to the decrease in bandgap. Generation of high pressure and temperature by thermal spike during MeV ion irradiation along the ion trajectory in the films is responsible for the structural phase transformation.

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