Browsing by Author "Nedeltcheva T.K."
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Item Spectrophotometric determination of oxygen content in calcium substituted RBCO (R = Eu, Gd, Er) superconductors(2005-01-01) Stoyanova-Ivanova A.K.; Nedeltcheva T.K.; Vladimirova L.K.The oxygen stoichiometry in R1-xCaxBa2 Cu3Oy (R = Eu, Er, Gd; x = 0, 0.2, 0.25, 0.3) superconducting bulk samples was determined spectrophotometrically. The dependence of the critical temperature on the y-oxygen coefficient and the x-coefficient of the included calcium was studied. © Central European Science Journals. All rights reserved.