Magnetoluminescence Studies of GaN:Fe
A. Niedźwiadek a, A. Wysmołek a, D. Wasik a, M. Potemski b, J. Szczytko a, M. Kamińska a, A. Twardowski a, B. Łucznik c, B. Pastuszka c and I. Grzegory c
a Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
b Grenoble High Magnetic Field Laboratory, CNRS, BP 166X, 38042 Grenoble, France
c Institute of High Pressure Physics, Polish Academy of Sciences, Warsaw, Poland
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Received: 9 06 2007;
We report on magneto-optical studies on iron doped GaN crystals grown using hydride vapor phase epitaxy method on bulk GaN substrate. The investigated samples showed an intensive 1.3 eV luminescence band, characteristic of Fe3+ (d5) center in GaN. A high quality of the investigated samples allowed us to observe a well-resolved fine structure of intracenter transitions between T 1(G) and A 1 (S) states, consisting of four sharp no-phonon lines. All the observed no-phonon lines showed pronounced splittings in magnetic field. From the analysis of the magneto-optical data, the structure of split T 1(G) multiplet in the magnetic field applied along c-axis of GaN crystals was established.
DOI: 10.12693/APhysPolA.112.177
PACS numbers: 78.55.Et, 71.55.Eq, 71.20.Be