Layer-by-layer deposition of superconducting Sr-Ca-Cu-O films by the spray pyrolysis technique

Pawar, S.H.; Pawaskar, P.N.; Ubale, M.J.; Kulkarni, S.B.

doi:10.1016/0254-0584(94)01443-k

Cited by 1 publication

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“…The precursor films obtained by means of this sequential deposition needs oxidation of the deposited layer with complete evaporation of the volatile gases present. The spray pyrolysis technique does not need subsequent oxidation because the complete thermal decomposition and oxidation of the deposited layers can be controlled [7]. On the other hand, Bi-based films are already used in low current as well as power applications [8,9].…”

Section: Introductionmentioning

confidence: 99%

BPSCCO Superconducting Films Grown by Spray Pyrolysis Technique: Systematic Study of the Relationship between Pb Content and Annealing Conditions

Valdés¹,

García²,

Mercado³

et al. 2012

AMPC

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Actually recent investigation in developing semiconducting-superconducting composites based in CdS and Bi-based superconductors has attracted interest in processing thin superconducting films. In this work are reported Bi-Pb-Sr-Ca-Cu-O (BPSCCO) thin films grown on MgO substrates by spray pyrolysis technique from a solution containing Bi(NO 3) 3 , Pb(NO 3) 2 , Sr(NO 3) 2 , Ca(NO 3) 2 and Cu(NO 3) 2 , with a subsequent solid state reaction for growing the Bi-based superconducting phases. Annealed films were characterized by X-ray diffraction, atomic absorption spectroscopy and resistance measurements. Interdependence between Pb content, annealing time and temperature, in the formation of superconducting phases was studied applying a fractional factorial design 3 III 4-2. Interrelation between Pb content, t a and T a exists. The presence of Pb is necessary to stabilize the high-T c phase but its content depends on the annealing conditions.

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Section: Introductionmentioning

confidence: 99%