Mechanisms of surface nanostructuring of Al2O3 and MgO by grazing incidence irradiation with swift heavy ions
Karlušić M. Rymzhanov R.A. OConnell J.H. Bröckers L. Luketić K.T. Siketić Z. Fazinić S. Dubček P. Jakšić M. Provatas G. Medvedev N. Volkov A.E. Schleberger M.
December 2021Elsevier B.V.
Surfaces and Interfaces
2021#27
We experimentally discovered that Al2O3 and MgO exhibit well-pronounced nanometric modifications on the surfaces when irradiated under grazing incidence with 23 MeV I beam, in contrast to normal incidence irradiation with the same ion beam when no damage was found. Moreover, ions in these two materials produce notably different structures: grooves surrounded with nanohillocks on MgO surfaces vs. smoother, roll-like discontinuous structures on the surfaces of Al2O3. To explain these results, detailed numerical simulations were performed. We identified that a presence of the surface inhibits recrystallization process, thereby preventing transient tracks from recovery, and thus forming observable nanopatterns. Furthermore, a difference in the viscosities in molten states in Al2O3 vs. MgO explains the differences in the created nanostructures. Our results thus provide a deeper understanding of the fundamental processes of surface nanostructuring, potentially allowing for controlled production of periodic surface nanopatterns.
Atomic force microscopy , Ion irradiation , Irradiation effects , Md simulation , Swift heavy ion
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Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, 10000, Croatia
Joint Institute for Nuclear Research, Joliot-Curie 6 Moscow Region, Dubna, 141980, Russian Federation
The Institute of Nuclear Physics, Ibragimov St. 1, Almaty, 050032, Kazakhstan
Nelson Mandela University, University way, Summerstrand, Port Elizabeth, 6001, South Africa
Fakultät für Physik and CENIDE, Universität Duisburg-Essen, Duisburg, d-47048, Germany
Institute of Physics, Czech Academy of Sciences, Na Slovance 2, Prague 8, 182 21, Czech Republic
Institute of Plasma Physics, Czech Academy of Sciences, Za Slovankou 3, Prague 8, 182 00, Czech Republic
National Research Centre ‘Kurchatov Institute’, Kurchatov Sq. 1, Moscow, 123182, Russian Federation
P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninskij pr. 53, Moscow, 119991, Russian Federation
National University of Science and Technology MISiS, Leninskij pr., 4, Moscow, 119049, Russian Federation
Ruđer Bošković Institute
Joint Institute for Nuclear Research
The Institute of Nuclear Physics
Nelson Mandela University
Fakultät für Physik and CENIDE
Institute of Physics
Institute of Plasma Physics
National Research Centre ‘Kurchatov Institute’
P. N. Lebedev Physical Institute of the Russian Academy of Sciences
National University of Science and Technology MISiS
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