Process for production of solution-derived (Pb,La)(Nb,Sn,Zr,Ti)O

Details Process for production of solution-derived (Pb,La)(Nb,Sn,Zr,Ti)O Process for production of solution-derived (Pb,La)(Nb,Sn,Zr,Ti)O

1997-07-29

1999-01-12

Utech, Benjamin

Coating processes

Electrical product produced

Condenser or capacitor

427100, 427240, 427294, 4274193, 501134, 501136, B05D 512

Patent

active

058584510

ABSTRACT:
A simple and rapid process for synthesizing (Pb,La)(Nb,Sn,Zr,Ti)O.sub.3 precursor solutions and subsequent ferroelectric thin films and powders of the perovskite phase of these materials has been developed. This process offers advantages over standard methods, including: rapid solution synthesis (<10 minutes), use of commercially available materials, film production under ambient conditions, ease of lanthanum dissolution at high concentrations, and no heating requirements during solution synthesis. For lanthanum-doped ferroelectric materials, the lanthanum source can be added with total synthesis time less than 10 minutes. Films and powders are crystallized at approximately 650.degree. C. and exhibit ferroelectric properties comparable to films and powders produced by other techniques which require higher crystallization temperatures.

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