VARIATIONS IN THE CHEMICAL-COMPOSITION OF BI(PB)-SR-CA-CU-O FILMS DEPOSITED BY SPRAY-PYROLYSIS METHOD

Authors
KONSTANTINOV K STAMBOLOVA I PESHEV P SOULEVA A TSACHEVA T GYUROV G KHRISTOVA I
Citation
K. Konstantinov et al., VARIATIONS IN THE CHEMICAL-COMPOSITION OF BI(PB)-SR-CA-CU-O FILMS DEPOSITED BY SPRAY-PYROLYSIS METHOD, Journal of analytical and applied pyrolysis, 42(1), 1997, pp. 89-94
Citations number
5
Categorie Soggetti
Spectroscopy,"Chemistry Analytical
Journal title
Journal of analytical and applied pyrolysis → ACNP
ISSN journal
01652370
Volume
42
Issue
1
Year of publication
1997
Pages
89 - 94
Database
ISI
SICI code
0165-2370(1997)42:1<89:VITCOB>2.0.ZU;2-I
Abstract
Polycrystalline oxide films were deposited by the spray pyrolysis tech nique on Al2O3 substrates, The atomic ratio in the initial spraying so lution was Bi:Pb:Sr:Ca:Cu = 1.6:0.4:2:2:3. The chemical composition of the films was studied by EDX and ICP-AES analyses at different stages of the preparation process: after the pyrolysis, after annealing at d ifferent temperatures and after annealing at a constant temperature fo r different times. The results obtained reveal the reasons for concent ration changes of the cations and make possible an optimisation of the composition of spraying solution in order to obtain single phase supe rconducting films. (C) 1997 Elsevier Science B.V.