ACTA

Observation of Magnetic Anisotropy in GaN:Cr Single Crystals

J.B. Gosk^{a, b}, M. Boćkowski^c, G. Kowalski^a, I. Grzegory^c, J. Szczytko^a and A. Twardowski^a
^aInstitute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
^bFaculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
^cHigh Pressure Research Center, PAS, Sokołowska 29/37, 01-142 Warsaw, Poland

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Magnetic properties of bulk wurtzite GaN:Cr single crystals were studied with the magnetic field applied parallel and perpendicular to the crystal wurtzite c-axis. Structure of the crystal was examined by the X-ray diffraction method. Strong anisotropy of magnetization at low temperatures (2-10 K) was observed. The experimental data suggest Cr to be in nonspherical d⁴ configuration.

DOI: 10.12693/APhysPolA.122.1007
PACS numbers: 71.55.Eq, 75.30.Gw, 75.50.Pp, 75.10.Dg