Effect of sodium substitution on superco
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B. Gopala Krishna; Ravichandra Gundakaram; S.V. Suryanarayana; R.D.K. Misra
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Article
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1992
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Elsevier Science
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English
β 612 KB
## Samples with the nominal composition BizSrzCa,\_,Na,CuzO, (with x=0.05,0.2,0.4 and 0.5) were prepared by the solid state reaction method. The role of Na and the effect of various heat treatments in the 2212 composition were studied. From the X-ray diffraction data it is found that the samples a