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Magnetic and structural properties of Gd-implanted zinc-blende GaN A. Melnikov, D. Reuter, and A. D. Wieck

Summary: Magnetic and structural properties of Gd-implanted zinc-blende GaN
F.-Y. Lo,a
A. Melnikov, D. Reuter, and A. D. Wieck
Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, Universitätsstr. 150,
D-44780 Bochum, Germany
V. Ney, T. Kammermeier, and A. Ney
Experimentalphysik, Universität Duisburg-Essen, Lotharstr. 1, D-47057 Duisburg, Germany
J. Schörmann, S. Potthast, D. J. As, and K. Lischka
Department of Physics, Universität Paderborn, Warburger Str. 100, D-33098 Paderborn, Germany
Received 21 March 2007; accepted 5 June 2007; published online 29 June 2007
Zinc-blende GaN layers grown by molecular beam epitaxy were uniformly focused-ion-beam
implanted with 300 keV Gd3+
ions for doses ranging from 1 1012
to 1 1015
, and their
structural and magnetic properties were studied. The implanted samples were not subjected to any
annealing treatment. Only Gd incorporation into zinc-blende GaN was observed by x-ray
diffraction. Magnetic investigations using superconducting quantum interference device
magnetometry reveal a super paramagneticlike behavior with an ordering temperature around 60 K


Source: As, Donat Josef - Department Physik, Universität Paderborn


Collections: Materials Science; Physics