Citation: Xi LI, Bao Kun XU, Zi Chen WANG, Feng CHI, Mu Yu ZHAO. PREPARATION OF NANOCRYSTALLINE MATERIALS OF PEROVSKITE-TYPE La_1-xSr_xFeO₃ bY USINO GEL OF POLYVINYL ALCOHOL[J]. Chinese Chemical Letters, ;1992, 3(1): 77-78. shu

PREPARATION OF NANOCRYSTALLINE MATERIALS OF PEROVSKITE-TYPE La_1-xSr_xFeO₃ bY USINO GEL OF POLYVINYL ALCOHOL

Department of Chemistry, Jilin University, Changchun 130023

Received Date: 9 September 1991

Precursors of La_1-xSr_xFeO₃ (x=0.0,0.1,0.4 and 0.6) nanocrystalline materials were prepared by the mixed salts dissolved in an aqueous solution of polyvinyl alcohol(PVA).XRD,DTA and TEM were used to characterize the samples.Well-nanocrystalline perovskite-type La_1-xSr_xFeO₃ could be synthesized at the temperatures as low as 400~550℃ for 2h by the calcination of these amorphousprecursors,and the calcination of wet LaFeO₃ gel was investigated at 300℃ forlh and 700℃ for 0.5h.
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