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Wet chemical formation of nanoparticles of binary perovskites through isothermal gel to crystallite conversion

Kutty, TRN and Padmini, P (1992) Wet chemical formation of nanoparticles of binary perovskites through isothermal gel to crystallite conversion. In: Materials Research Bulletin, 27 (8). pp. 945-952.

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Official URL: http://dx.doi.org/10.1016/0025-5408(92)90194-5

Abstract

Coarse BO2·xH2O (2 < x < 80) gels, free of anion contaminants react with A(OH)2 under refluxing conditions at 70�100°C giving rise to crystallites of single phased, nanometer size powders of ABO3 perovskites (A = Ba, Sr, Ca, Mg, Pb; B = Zr, Ti, Sn). Solid solutions of perovskites could be prepared from compositionally modified gels or mixtures of A(OH)2. Donor doped perovskites could also be prepared from the same method so that the products after processing are often semiconducting. Faster interfacial diffusion of A2+ ions into the gel generates the crystalline regions whose composition is controllable by the A/B ratio as well as the A(OH)2 concentration.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier science.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 30 May 2011 04:47
Last Modified: 30 May 2011 04:47
URI: http://eprints.iisc.ernet.in/id/eprint/38003

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