Advanced Technology Materials, Inc.

Philip S Chen

Ward C Stevens

Delwyn F Cummings

Jeffrey F Roeder

Gregory T Stauf

A Zr-doped (Ba,Sr)TiO perovskite crystal material dielectric thin film. Such dielectric thin film is characterized by at least one of the characteristics including: (a) a breakdown strength of at least 1.3 MV/cm; (b) a leakage current of not more than 1&times;10 A/cm under applied voltage of about &plusmn;3V or above and at temperature of about 100&deg; C. or above; and (c) an energy storage density of at least 15 J/cc. The dielectric thin film comprises zirconium dopant in the amount of 0.5% to 50% by total weight of the Zr-doped (Ba,Sr)TiO perovskite crystal material, preferably 2-15%, more preferably 4% to 14%, and most preferably 5% to 12%. Such dielectric thin film in a preferred aspect is deposited by a MOCVD process using metal precursors Ba(thd) -polyamine, Sr(thd) -polyamine, Zr(thd) , and Ti(OiPr) (thd) at a deposition temperature in the range from about 560&deg; C. to 700&deg; C.

Zirconium-doped BST materials and MOCVD process forming same

A ceramic composition having a high adsorptive capacity for oxygen at elevated temperature, including at least one of: Bi Er O ; Bi Y O ; La Ba Co Ni O ; La Sr Co Ni O ; La Ca Co Ni O ; La Ba Co Fe O ; La Sr Co Fe O ; and La Ca Co Fe O ; wherein x is from 0.2 to 0.8, y is from 0 to 1.0 and d&equals;0.1 to 0.9. Such ceramic composition may be made using a modified Pechini synthetic procedure. The resulting ceramic composition is usefully employed as an adsorbent for separation of oxygen from an oxygen-containing feed gas mixture, e.g., in a pressure swing adsorption (PSA) process.

Ceramic composition having high adsorptive capacity for oxygen at elevated temperature

A pressure swing adsorption system for processing an oxygen-containing feed gas mixture to extract oxygen therefrom, comprising an adsorbent bed arranged for elevated temperature sorption/desorption operation, wherein the adsorbent bed comprises a ceramic adsorbent having affinity for oxygen when the ceramic adsorbent is at elevated temperature. Suitable ceramic adsorbents include lanthanum calcium cobalt ferrites and other oxygen ionic transport ceramic metal oxide compositions. As applied to the separation of air or other oxygen/nitrogen mixtures, the PSA system is effective to produce oxygen-rich as well as nitrogen-rich product gases.

Growing community of inventors

Bethel, CT, United States of America

Philip S Chen