Structure and magnetic properties of the dilute magnetic semiconductor Mn:CuInTe2

Lin, L.-J.; Wernick, J. H.; Tabatabaie, N.; Hull, G. W.; Meagher, B.
December 1987
Applied Physics Letters;12/14/1987, Vol. 51 Issue 24, p2051
Academic Journal
The properties of bulk polycrystalline p-type Mn:CuInTe2 (with up to 12% Mn substitution) have been examined using polarized light microscopy, x-ray energy dispersive analysis, optical spectrometry, van der Pauw technique, and superconducting quantum interference device magnetometer measurements. The compound (Cu1-xMnx)InTe2 is a tetragonal chalcopyrite with lattice constants nearly equal to that of CuInTe2. On the other hand, attempted substitution of Mn in In sites produces a second phase composed of Cu and Te. The band gap of Mn:CuInTe2 is larger than 0.92 eV. Most samples show phonon-limited mobility, with the highest mobilities occurring at ≊75 K. Samples with 3% Mn substitution in Cu sites are paramagnetic. At higher Mn concentration (9%


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