Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Patent
1993-11-30
1995-01-24
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
501 12, 252 629, 423593, 423598, 423608, 423610, C04B 3549
Patent
active
053842944
ABSTRACT:
Method is provided for preparing PbO-based ceramics by mixing metal cations in alkanolamines and then adding the mixture to lead carboxylates in alcohol, to obtain ceramic solutions or gels therefrom. The metal cations are sourced from metal alkoxides, chelates and salts and include metals of Ti, Zr and La. The above solutions and gels can be employed to form PbO-based powders, fibers and films, e.g. films of PZT and PLZT, which find electrical and optical applications such as ferroelectric memory and dielectric waveguides. The invention resides in the above method and resulting PbO ceramics which have e.g. films of considerably higher dielectric constants than previously known in the art.
REFERENCES:
patent: 3725298 (1973-04-01), Woodhead et al.
patent: 4397666 (1983-08-01), Mishima et al.
patent: 4925647 (1990-05-01), Kirchhofer
patent: 4946710 (1990-08-01), Miller et al.
patent: 4970182 (1990-11-01), Shirasaki
patent: 5047174 (1991-09-01), Sherif
patent: 5076901 (1991-12-01), Whatmore et al.
patent: 5091348 (1992-02-01), Woodhead et al.
patent: 5093291 (1992-03-01), Kawabata et al.
patent: 5096642 (1992-03-01), Shirasaki
patent: 5114891 (1992-05-01), Kunz et al.
patent: 5169576 (1992-12-01), Anderson et al.
patent: 5196388 (1993-03-01), Shyu
Boulton Jonathan M.
Teowee Gimtong
Uhlmann Donald R.
Bell Mark L.
Collier Stanton E.
Jones Deborah
Stover Thomas C.
The United States of America as represented by the Secretary of
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