Publications

A class of nanoporous organosilicate has been developed that can reach an ultralow-dielectric constant (kless than or equal to2).

Mesa and planar geometry GaN Schottky rectifiers were fabricated on 3-12 mum thick epitaxial layers.

Ceramic processing methods have been used to prepare high T sub c superconductors in both the La sub (2-x)Sr sub (x)CuO sub (4-8) system and the Ba sub 2 YCu sub 3 O sub (9-8) system.

The processing and fabrication of superconducting ceramics will be discussed emphasizing tape casting as a method of producing flexible thin sheets of unfired ceramic.

Of the various fabrication means for bulk ceramic high T sub c superconductors, tape casting is a method offering promise because it produces thin sheets or strips, can be easily shaped and can be

Of the high temperature superconductor families, the YBa sub 2 Cu sub 3 O sub 7 member still offers potential for high critical current density (J sub c).

The critical current density limitations of oxide superconductors processed by ceramic methods are outlined.

A short history of oxide superconductors will be reviewed leading to the discovery of the Ba sub 2 YCu sub 3 O sub 7 compound superconducting at > 90K.

High temperature superconductivity in oxide superconductors such as Y-Ba- Cu-O, Bi-Sr-Ca-Cu-O, and Tl-Ba-Ca-Cu-O generated unprecedented excitement in view of their immense technological potential.

Ceramic processing of YBa sub 2 Cu sub 3 O sub 7 based superconductors and process related problems will be described.