| Observation of Magnetic Anisotropy in Bulk GaMnN:Mg Crystals |
| J. Gosk a,b , M. Zając a , M. Kamińska a , A. Twardowski a , I. Grzegory c , M. Boćkowski c and S. Porowski c a Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland b Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland c High Pressure Research Center, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland |
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| Magnetic properties of bulk wurtzite n-type GaMnN and highly resistive GaMnN:Mg monocrystals were studied for the magnetic field applied parallel and perpendicular to the crystal hexagonal c-axis. Magnetization of both types of samples reveals paramagnetic behavior. However, for n-type GaMnN isotropic magnetization was observed which is in agreement with Mn d 5 configuration. On the other hand, GaMnN co-doped with Mg shows large magnetic anisotropy which suggests Mn to be in nonspherical d 4 or d 3 configuration. |
| DOI: 10.12693/APhysPolA.103.665 PACS numbers: 71.55.Eq, 75.30.Gw, 75.50.Pp |