Lakhal, E.Amira, A.Chihoub, R.Soylu, NevinAltıntaş, Sevgi PolatVarilci, AhmetTerzioğlu, Cabir2023-06-062023-06-062021Lakhal, E., Amira, A., Chihoub, R., Soylu, N., Altintas, S. P., Varilci, A., & Terzioglu, C. (2021). Improved Magnetoresistance in Sm 0.7-x Ce x Sr 0.3 MnO 3 Manganites Prepared by a Sol–Gel Route. Journal of Low Temperature Physics, 204(1-2), 48-56.0022-22911573-7357http://dx.doi.org/10.1007/s10909-021-02598-4https://hdl.handle.net/20.500.12491/11070In this work, manganite ceramics of Sm0.7-xCexSr0.3MnO3 (0 <= x <= 0.3) are prepared by a citrate sol-gel chemical route and characterized. The structure of the obtained samples is refined in the orthorhombic system with the Pnma space group. The doping causes a change in the lattice parameters leading to a decrease in the cell volume. It also increases slightly the grain size of the crystallites. The temperature dependence of resistivity reveals a metal-insulator transition for all samples. The doping shifts the temperature of this transition towards high values. The extracted magnetoresistance for a 5 T magnetic field is enhanced by doping. The highest obtained value increases from 66.70% for x = 0 to 97.96% for x = 0.3.eninfo:eu-repo/semantics/closedAccessManganitesDopingResistivityMagnetoresistanceArticle10.1007/s10909-021-02598-42041-248562-s2.0-85106012942Q2WOS:000652664000001Q4