Formation and characterization of PrGa0.9Mg0.1O3 synthesized by a citric acid method
Creators
- 1. Center for Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001 (China)
- 2. Group of Rare Earth Solid State Physics and Department of Physics, Jilin University, Changchun 130023 (China)
- 3. Center for Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001 (China) and Group of Rare Earth Solid State Physics and Department of Physics, Jilin University, Changchun 130023 (China) and International Center for Materials Physics, Academia Sinica, Shenyang 110015 (China)
Description
PrGa0.9Mg0.1O3 was synthesized by using a citric acid method. Compared with the sample prepared by the solid state technique, the sample synthesized by the citric acid method crystallized at a lower temperature. X-ray diffraction data indicated that a pure orthorhombic phase was formed at 1300 deg. C. PrGa0.9Mg0.1O3 showed a conductivity of 0.076 S/cm at 800 deg. C and an activation energy of 32.98 kJ/mol. Its average thermal expansion coefficient from 600 to 1000 deg. C was 11.9 x 10-6 K-1, which well matches with the NiO/YSZ anode and doped LaMnO3 cathode. A power density of 55 mW/cm2 and a short circuit current density of 200 mA/cm2 were obtained at 900 deg. C in a single fuel cell experiment by using PrGa0.9Mg0.1O3 as an electrolyte. This could be attributed to the existence of hole conduction in the sample
Additional details
Identifiers
- DOI
- 10.1016/j.jallcom.2004.09.070;
- PII
- S0925-8388(04)01331-3;
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 393
- Journal Issue
- 1-2
- Journal Page Range
- p. 274-278
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37052337
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ACTIVATION ENERGY; CITRIC ACID; DOPED MATERIALS; ELECTRON MICROSCOPY; GALLIUM COMPOUNDS; LANTHANUM COMPOUNDS; MAGNESIUM COMPOUNDS; MANGANATES; NICKEL OXIDES; ORTHORHOMBIC LATTICES; OXIDES; PRASEODYMIUM COMPOUNDS; SYNTHESIS; THERMAL EXPANSION; THERMAL GRAVIMETRIC ANALYSIS; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CARBOXYLIC ACIDS; CHALCOGENIDES; CHEMICAL ANALYSIS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; ENERGY; EXPANSION; GRAVIMETRIC ANALYSIS; HYDROXY ACIDS; MANGANESE COMPOUNDS; MATERIALS; MICROSCOPY; NICKEL COMPOUNDS; ORGANIC ACIDS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; QUANTITATIVE CHEMICAL ANALYSIS; RARE EARTH COMPOUNDS; SCATTERING; THERMAL ANALYSIS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.