NDLI: Oxalate coprecipitation route to the piezoelectric Pb(Zr,Ti)O<sub>3</sub> oxide

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Oxalate coprecipitation route to the piezoelectric Pb(Zr,Ti)O₃ oxide

Content Provider	Royal Society of Chemistry (RSC)
Author	Han, Yang-Su Choy, Jin-Ho Kim, Seung-Joo
Copyright Year	1997
Abstract	A homogeneous and stoichiometric Pb(Zr,Ti)O 3 (PZT) fine powder was prepared by thermal decomposition of the metal oxalate precursor formed by the precipitation reaction of the metallic components in aqueous solution with oxalic acid. Theoretical solubility isotherms of metal oxalates were established as a function of the solution pH and the metal ion concentration using thermodynamic equilibrium constants for the corresponding metal salts in aqueous solution. Through the theoretical solubility isotherms, the optimum pH domain for preparing the homogeneous and stoichiometric PZT–oxalate precursor was found to be 3–4. Crystalline PZT with tetragonal symmetry began to form after heating the precursor at 600 °C and a monophasic PZT powder consisting of submicrometer (0.3–0.5 µm) particles with spherical shape could be obtained after calcination at 800 °C for 2 h. The oxalate-derived PZT powder showed a good sinterability even below 1150 °C where the piezoelectric properties were optimized.
Starting Page	1807
Ending Page	1813
Page Count	7
File Format	PDF
ISSN	09599428
Volume Number	7
Issue Number	9
Journal	Journal of Materials Chemistry
DOI	10.1039/a700391i
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Stoichiometry Lead Zirconium Lead zirconate titanate Acid PH Ion Thermodynamic equilibrium Pleckstrin homology domain Tetragonal crystal system Micrometre Calcination Piezoelectricity
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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Oxalate coprecipitation route to the piezoelectric Pb(Zr,Ti)O₃ oxide