Chemical solution deposition preparation of double perovskite Sr2FeMoO6 film on LaAlO3 (001) substrate

Sr2FeMoO6 film was successfully deposited on LaAlO3 (00l) substrate via chemical solution deposition using low cost precursor materials of Sr nitrate, Fe nitrate, and ammonia-complexed molybdic acid. The X-ray diffraction, field-emission scan electron microscopy and atomic force microscopy results showed that the Sr2FeMoO6 film was highly (00l)-oriented and relatively smooth and dense with few undesired SrMoO4 phase. The transport and magnetic measurements showed that the Sr2FeMoO6 film had a Curie temperature at 368 K and behaved like semiconductors, which could be attributed to the large Fe/Mo disorders. Further works about improving the Fe/Mo order as well as the low-field magnetoresistance are being carried out and will be reported elsewhere.