Tuning Magnetocaloric Properties for La1 – xSrxCoO3
E. M. Ahmed, Hatem R. Alamri, Sameh M. Elghnam, O. Eldarawi, T. E. Tawfik, Ayman M. Mahmoud, S. E. Elwan, O. M. Hemeda, Mahmoud A. Hamad, Gamal Attia Hussein
Abstract
Low magnetic field magnetocaloric (MC) properties of La1 – xSrxCoO3 (x = 0.3 and 0.5) near phase transition from a ferromagnetic to a paramagnetic state were investigated. It is shown that the change of Sr content allows MC effect in La1 – xSrxCoO3 to be tunable, which is more practical for construction of MC refrigeration. MC properties of the x = 0.5 sample are significantly greater than that of the x = 0.3 one. Furthermore, the results show that MC properties of La1 – xSrxCoO3 samples are significantly larger, and comparable with some MC properties of many materials like Gd1 – xCaxBaCo2O5.5 and Ge0.95Mn0.05.