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PLZT CAPACITOR AND METHOD TO INCREASE THE DIELECTRIC CONSTANT

United States Patent Application

*** PATENT GRANTED ***
20170330685
9,842,695
A1
View the Complete Application at the US Patent & Trademark Office
A ceramic-capacitor includes a first electrically-conductive-layer, a second electrically-conductive-layer arranged proximate to the first electrically-conductive-layer, and a dielectric-layer interposed between the first electrically-conductive-layer and the second electrically-conductive-layer. The dielectric-layer is formed of a lead-lanthanum-zirconium-titanate material (PLZT), wherein the PLZT is characterized by a dielectric-constant greater than 125, when measured at 25 degrees Celsius and zero Volts bias, and an excitation frequency of ten-thousand Hertz (10 kHz). A method for increasing a dielectric constant of the lead-lanthanum-zirconium-titanate material (PLZT) includes the steps of depositing PLZT to form a dielectric-layer of a ceramic-capacitor, and heating the ceramic-capacitor to a temperature not greater than 300.degree. C.
Taylor, Ralph S. (Noblesville, IN), Fairchild, Manuel Ray (Kokomo, IN), Balachandran, Uthamalingam (Willowbrook, IL), Lee, Tae H. (Naperville, IL)
15/ 151,830
May 11, 2016
GOVERNMENT LICENSE RIGHTS STATEMENT [0001] This is an invention jointly developed by Argonne National Laboratory and Delphi Automotive System, LLC. The United States Government has rights in this invention pursuant to Contract No. DE-AC02-06CH11357 between the United States Government and UChicago Argonne, LLC representing Argonne National Laboratory and pursuant to Sub Contract No. 4F-31041 between the United States Government/Department of Energy (Argonne National Laboratory) and Delphi Automotive Systems, LLC.