Journal
HYPERFINE INTERACTIONS
Volume 237, Issue -, Pages -Publisher
SPRINGER INT PUBL AG
DOI: 10.1007/s10751-016-1248-y
Keywords
AlN; Fe-56/Fe-57 implantation; Defect annealing
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An AlN thin film grown on sapphire substrate was implanted with 45 keV Fe-57 and Fe-56 ions at several energies to achieve a homogeneous concentration profile of approximately 2.6 at.%. in the AlN film. Conversion electron Mossbauer Spectroscopy data were collected after annealing the sample up to 900 degrees C. The spectra were fitted with three components, a single line attributed to small Fe clusters, and two quadrupole split doublets attributed to Fe substituting Al in the wurtzite AlN lattice and to Fe located in implantation induced lattice damage. The damage component shows significant decrease on annealing up to 900 degrees C, accompanied by corresponding increases in the singlet component and the substitutional Fe.
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