Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/4398
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Title

Approximation to the laser floating zone preparation of high temperature BSCCO superconductors by DSC

AuthorsMayoral Gastón, María del Carmen CSIC ORCID ; Andrés Gimeno, José Manuel CSIC ORCID CVN ; Bona, María T. CSIC; Angurel, Luis A. CSIC ORCID; Natividad, Eva CSIC ORCID
KeywordsDSC
BSCCO superconductors
Solid diffusion
Precursor composition
Issue Date5-Aug-2003
PublisherElsevier BV
CitationThermochimica Acta 409(2): 157-164 (2004)
AbstractDifferential scanning calorimetry (DSC) has been used to simulate laser fusion of ceramic precursors to prepare BSCCO high temperature superconducting materials. At fast heating rates, typical of the laser floating zone, the energy required for complete melting of the precursor increases with the Bi to Sr+Ca ratio, in agreement with the critical current results obtained. At lowheating rates, solid-state reactions involving ionic rearrangements take place before incongruent melting. These changes can be divided into three processes and can be quantified from calorimetric measurements. Lower heating rates and isothermal experiments allow detailed visualisation of the ionic arrangements taking place. The results prove that the mechanism of the final phase formation is dependent on the fabrication procedure.
Description10 Figures, 2 Tables
URIhttp://hdl.handle.net/10261/4398
DOI10.1016/S0040-6031(03)00354-X
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