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Magnetic, optical and transport properties of GaMnN films |
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| Authors: | K Sardar AR RajuB Bansal V VenkataramanCNR Rao |
| Institution: | a Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560064, India b Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India c Department of Physics, Indian Institute of Science, Bangalore 560012, India |
| Abstract: | GaMnN films with 1-3% Mn deposited on Si(100) and Al2O3(0001) substrates, by the technique of nebulized spray pyrolysis by employing acetylacetonate precursors, have been characterized by X-ray diffraction, photoluminescence spectra and other techniques. The films are ferromagnetic and show magnetic hysteresis. The ferromagnetic TC increases with the Mn content, with the 3% Mn film showing a TC of ∼250 K. Anomalous Hall effect is observed below TC where the films exhibit a small negative magnetoresistance. |
| Keywords: | 75 70 Ak 73 50 -h 74 25 Ha 78 55 -m |
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