Crystal structure of epitaxial YBCO films prepared on (001) MgO substrates at low oxygen partial pressures

Structural and superconducting properties of EuBa2Cu3O7 xthin films grown by off-axis pulsed laser deposition

“…Estimated values of the c parameter were 1.170 ± 0.001 nm for samples Eu123-1 and Eu123-2, and 1.173 ± 0.001 nm for Eu123-3, whereas for YBCO the caxis value is 1.1707 nm [17]. According to the results found for Y123 [18] and Eu123 [19] we assume that the extended c parameter may be due to the structural disorder, especially Eu and Ba cation exchange, which may be estimated by means of the peak intensity ratio I = (005)/(006) [20]. Such ratios were determined by evaluating the integrated intensities of the (005) and (006) peaks using a Gaussian peak fitting function.…”