Preparation and Characterization of La0.9Sr0.1Ga0.8Mg0.2O3-α by Citrate Method

Journal of Inorganic Materials

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Preparation and Characterization of La_0.9Sr_0.1Ga_0.8Mg_0.2O_3-α by Citrate Method

ZHENG Wen-Jun¹; WU Li-Yan¹; PENG Ding-Kun²; MENG Guang-Yao²

1. Department of Chemistry; Nankai University; Tianjin 300071; China; 2. Department of Materials Science and Engineering; University of Science and Technology of China; Hefei 230026; China

Received:2000-03-30 Revised:2000-05-08 Published:2001-03-20 Online:2001-03-20

Abstract

Abstract: La_0.9Sr_0.1Ga_0.8Mg_0.2O_3-αwas prepared by a citrate method. Thermal analysis (TG/DTA) was used to characterize the thermal decomposition of the organic ligands of the gel. The gel decomposed to its oxides at 256-309℃. X-ray diffraction patterns indicate a pure primitive-cubic phase is formed by 1300℃ without impure phases. The impedance spectra of an 88%-dense sample exhibit no grain-boundary contribution, a conductivity σ=2.l×10^-2Scm^-1 at 800℃ and an activity energy E=0.98eV.

Key words: citrate method, oxide-ion conductor, LSGM

CLC Number:

TM911

ZHENG Wen-Jun,WU Li-Yan,PENG Ding-Kun,MENG Guang-Yao. Preparation and Characterization of La_0.9Sr_0.1Ga_0.8Mg_0.2O_3-α by Citrate Method[J]. Journal of Inorganic Materials.

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Preparation and Characterization of La_0.9Sr_0.1Ga_0.8Mg_0.2O_3-α by Citrate Method

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