Chemical solution deposition preparation of double perovskite Sr_2FeMoO_6 film on LaAIO_3 (001) substrate

摘要

Sr_2FeMoO_6 film was successfully deposited on LaAiO_3 (001) 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 Sr_2FeMoO_6 film was highly (001)-oriented and relatively smooth and dense with few undesrred SrMoO_4 phase. The transport and magnetic measurements showed that the Sr_2FeMoO_6 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 earned out and will be reported elsewhere.