2 MeV PROTON IRRADIATION EFFECTS ONZnOSINGLE CRYSTAL

T. Sechogela, L. Kotsedi, M. Nkosi, C. Sandt, R. Madjoe, W. Przybylowicz, K. Bharuth-Ram and M. Maaza ()
Additional contact information
T. Sechogela: Materials Research Department, iThemba LABS-National Research Foundation, Somerset West, Western Cape Province, South Africa;
L. Kotsedi: Materials Research Department, iThemba LABS-National Research Foundation, Somerset West, Western Cape Province, South Africa;
M. Nkosi: Materials Research Department, iThemba LABS-National Research Foundation, Somerset West, Western Cape Province, South Africa
C. Sandt: SOLEIL, SIMS Beamline, L'Orme des Merisiers, Saint Aubin, 91192 Gif-sur-Yvette Cedex, France
R. Madjoe: UNESCO Africa Chair in Nanosciences-Nanotechnology, College of Graduate Studies, University of South Africa, Muckleneuk Ridge, P. O. Box 392, Pretoria, South Africa;
W. Przybylowicz: Materials Research Department, iThemba LABS-National Research Foundation, Somerset West, Western Cape Province, South Africa
K. Bharuth-Ram: Materials Research Department, iThemba LABS-National Research Foundation, Somerset West, Western Cape Province, South Africa
M. Maaza: Materials Research Department, iThemba LABS-National Research Foundation, Somerset West, Western Cape Province, South Africa;

Surface Review and Letters (SRL), 2014, vol. 21, issue 01, 1-6

Abstract: Melt grownZnOsingle crystal was irradiated with varying fluence of 2 MeV proton beam in the range of1 × 1016H+/cm2to5 × 1017H+/cm2. The irradiated spots exhibited varying degree of discoloration due to the irradiation indicating surface and volume defects. The surface roughness of the irradiated spots was measured using atomic force microscopy indicating surface modification of the sample. The extent of the damage on theZnOsingle crystal from radiation was assessed using Raman spectroscopy. The emergence of theA1(LO)band at 579 cm-1pointed to the significant surface alteration in theZnOcrystal due to proton bombardment.

Keywords: Single crystal; H+irradiation; fluence; Raman shift (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1142/S0218625X14500127

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