We report the structural, magnetic, and electrical transport properties of pervoskite oxide La0.9Te0.1MnO3. This material, with space group R-3C, shows spin-glasslike features at low temperature and has a good colossal magnetoresistance behavior. The magnetoresistance ratio MR=rho(0)-rho(H)/rho(0) is about 51 at 200 K in a field of 4 T. X-ray photoemission spectroscopy measurements suggest that Te ions are in the Te4+ state, while the Mn ions may be in the Mn2+ and Mn3+ valence state. (C) 2003 American Institute of Physics. References: 22
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