Superconducting thick films based on Bi-Pb-Sr-Ca-Cu Nitrate pastes, screen printed on alumina and ZrO2 buffered alumina

✍ Scribed by I. Van Driessche; D. Depla; J. Denul; N. De Roo; R. Gryse; S. Hoste

• Book ID: 103984515
• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 916 KB
• Volume: 2
• Category: Article
• ISSN: 0964-1807
• DOI: 10.1016/0964-1807(94)90086-8

✦ Synopsis

This study demonstrates

the preparation of screen printed Bi_(PbtSr-Ca-Cu-oxide superconducting films starting from a paste, based on spray dried nitrate solutions. The spray dried precursor powder was studied using TGA-DTA and XRD. It is shown that decomposition to oxides occurs at iemperatures more than 200°C lower than those in the respective oxide/carbonate mixture. The thick film orotnzrties were studied using XRD. SEM-EDAX and electrical resisitivitv measurements. The films, coated'on'alumina substrates, showed clear superconducting transition below 60K, but did not reach zero resistivity. Films coated on alumina with a ZrOz buffer layer and sintered at 835°C showed T,, 0 up to 77 K.