ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
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%〈x〈12%), the (Cu1−xMnx)InTe2 samples show antiferromagnetic coupling and a measured effective magnetic moment up to ≈5.4μB/Mn atom. Samples with attempted Mn substitution in In sites (from 3% to 9%) show anomalous magnetic behavior at low temperatures.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.98289
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