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Title: Surface nanostructuring by ion-induced localized plasma expansion in zinc oxide

Creation of hillock-like nanostructures on the surface of zinc oxide single crystals by irradiation with slow highly charged ions is reported. At constant kinetic energy, the nanostructures were only observed after irradiation with ions of potential energies above a threshold between 19.1‚ÄČkeV and 23.3‚ÄČkeV. The size of the nanostructures increases as a function of potential energy. A plasma expansion approach is used to explain the nanostructures creation. The calculations showed that the surface nanostructures became taller with the increase of ionic temperature. The influence of charged cluster formation and the relevance of their polarity are discussed.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6]
  1. Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261 (Saudi Arabia)
  2. (HZDR), 01328 Dresden (Germany)
  3. (Egypt)
  4. Department of Physics, Faculty of Science, Port Said University, Port Said 42521 (Egypt)
  5. (BUE), El-Shorouk City, Cairo (Egypt)
  6. Theoretical Physics Laboratory, Faculty of Physics USTHB, B.P. 32 Bab Ezzour, 16079 Algiers (Algeria)
Publication Date:
OSTI Identifier:
22299991
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 23; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ION TEMPERATURE; IONS; IRRADIATION; KEV RANGE 10-100; MONOCRYSTALS; NANOSTRUCTURES; PLASMA EXPANSION; SURFACES; ZINC OXIDES