Influence of Sr doping on the structural and magnetic properties of (Y,Gd) Ba1−𝑥Sr𝑥CuFeO5 (𝑥 = 0,0.25,0.5) studied by FTIR and 57 Fe Mössbauer spectroscopy - Saavedra-Gaona, I M; Mesquita, F; Cohen, R; Nagamine, Luiz Carlos Camargo Miranda; Parra-Vargas, C A; Munevar, J (Elsevier, 2024)