Coating processes – Coating by vapor – gas – or smoke – Mixture of vapors or gases utilized
Reexamination Certificate
2011-01-04
2011-01-04
Brunsman, David M (Department: 1793)
Coating processes
Coating by vapor, gas, or smoke
Mixture of vapors or gases utilized
C427S255190, C427S080000, C438S003000, C257S295000, C361S321500, C106S287190
Reexamination Certificate
active
07862857
ABSTRACT:
A novel lead zirconium titanate (PZT) material having unique properties and application for PZT thin film capacitors and ferroelectric capacitor structures, e.g., FeRAMs, employing such thin film material. The PZT material is scalable, being dimensionally scalable, pulse length scalable and/or E-field scalable in character, and is useful for ferroelectric capacitors over a wide range of thicknesses, e.g., from about 20 nanometers to about 150 nanometers, and a range of lateral dimensions extending to as low as 0.15 μm. Corresponding capacitor areas (i.e., lateral scaling) in a preferred embodiment are in the range of from about 104to about 10−2μm2. The scalable PZT material of the invention may be formed by liquid delivery MOCVD, without PZT film modification techniques such as acceptor doping or use of film modifiers (e.g., Nb, Ta, La, Sr, Ca and the like).
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Co-pending U.S. Appl. No. 11/949,871.
Baum Thomas H.
Bilodeau Steven M.
Johnston Stephen T.
Roeder Jeffrey F.
Russell Michael W.
Advanced Technology & Materials Inc.
Brunsman David M
Chappuis Margaret
Hultquist Steven J.
Hultquist IP
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