Transfer hyperfine interaction inCd1−xMnxTe studied by NMR

NMR measurements of 125 Te and 113 Cd have been performed on a series of samples of Cd 1-x Mn x Te (x=0.01, 0.015, 0.02, 0.029, 0.055). The nuclear spin-lattice relaxation rates of the two nuclei are enhanced by two orders of magnitude compared to the relaxation rates of the same nuclei in the non-magnetic II-VI semiconductor alloys. Well-resolved 113 Cd and 125 Te spectra were obtained using the magic-angle-spinning technique. The line shifts are temperature dependent and follow the Curie-Weiss law, indicating that the predominant interaction responsible for the NMR behavior is the transfer hyperfine interaction of the Mn 2+ ion with the Cd or Te nuclei