Islam, Quazi Arif and Raja, Mirwasim and Satra, Chiranjib and Basu, Rajendra Nath (2015) Low temperature synthesis of nanocrystalline scandia-stabilized zirconia by aqueous combustion method and its characterizations. Bulletin of Materials Science, 38 (6). pp. 1473-1478. ISSN 0250-4707

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Zirconia stabilized with 11 mol% scandia (11ScSZ) has been successfully synthesized by novel alanine-assisted soft chemical aqueous combustion method. The reaction kinetics during combustion synthesis has been studied in detail by analysing thermal behaviour of different metal-alanine complexes. A single phase 11ScSZ powder is achieved at significantly low calcination temperature of 500(a similar to)C. Field emission scanning electron micrograph reveals an agglomerated morphology with particle size ranging from 80 to 100 nm. The thermal expansion coefficient is found to be 11.03 x 10(-6) C-a similar to(-1) in the temperature range between room temperature and 1000(a similar to)C. Optical bandgap of 5.19 eV has been determined using UV-Vis spectroscopy and results are compared with the help of theoretical density of states. The total electrical conductivity of sintered pellet is found to be 7.3 x 10(-3) S cm(-1) at 700(a similar to)C as measured by impedance spectroscopy.

Item Type: Article
Subjects: Electronics
Divisions: Fuel Cell and Battery
Depositing User: Bidhan Chaudhuri
Date Deposited: 30 Dec 2015 05:51
Last Modified: 30 Dec 2015 05:51

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