I. Vandriessche et al., SUPERCONDUCTING THICK-FILMS BASED ON BI-PB-SR-CA-CU NITRATE PASTES, SCREEN-PRINTED ON ALUMINA AND ZRO2 BUFFERED ALUMINA, Applied superconductivity, 2(6), 1994, pp. 391-400
Citations number
13
Categorie Soggetti
Material Science","Physics, Applied","Physics, Condensed Matter
This study demonstrates the preparation of screen printed Bi-(Pb)-Sr-C
a-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 occur
s at temperatures more than 200 degrees C lower than those in the resp
ective oxide/carbonate mixture. The thick film properties were studied
using XRD, SEM-EDAX and electrical resisitivity measurements. The fil
ms, coated on alumina substrates, showed clear superconducting transit
ion below 60K, but did not reach zero resistivity. Films coated on alu
mina with a ZrO2 buffer layer and sintered at 835 degrees C showed T-c
, 0 up to 77 K.