In:
Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 1095 ( 2015-3), p. 402-406
Abstract:
The La 0.7 M 0.3 MnO 3 (M=Ca, Sr) were synthesized by combining sol-gel technique and solid state sintering method. The evolutions of phase structure and micro-morphologies of the La 0.7 M 0.3 MnO 3 with final sintering temperature (950-1250°C) were investigated. The results show that the La 0.7 Ca 0.3 MnO 3 compounds exhibit single perovskite phase with cubic structure and the La 0.7 Sr 0.3 MnO 3 compounds exhibit single perovskite phase with rhombohedra structure. The final sintering temperature has no obvious effect on the phase structure of La 0.7 Ca 0.3 MnO 3 . However, the density and grain size of La 0.7 M 0.3 MnO 3 (M=Ca, Sr) increase with the increase of the final sintering temperature. Moreover, the micro-morphologies of La 0.7 Ca 0.3 MnO 3 are more sensitive to final sintering temperature compared with that of La 0.7 Sr 0.3 MnO 3 . When sintering temperature is no less than 1150°C, the La 0.7 Ca 0.3 MnO 3 has hardly any pore. After sintering at no less than 1250°C, the La 0.7 Sr 0.3 MnO 3 becomes dense.
Type of Medium:
Online Resource
ISSN:
1662-8985
DOI:
10.4028/www.scientific.net/AMR.1095
DOI:
10.4028/www.scientific.net/AMR.1095.402
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2015
detail.hit.zdb_id:
2265002-7