Altıntaş, Sevgi PolatAmira, A.Mahamdioua, N.Varilci, AhmetTerzioğlu, Cabir2021-06-232021-06-2320110925-83881873-4669https://doi.org/10.1016/j.jallcom.2011.01.008https://hdl.handle.net/20.500.12491/6980We have investigated the influence of europium (Eu) doping on structural and magneto-electrical properties of La0.7Ca0.3MnO3 compounds. In order to analyze the physical mechanism of a spin disorder system and study their relative evolutions, two samples of nominal compositions (La0.7-xEux)Ca0.3MnO3 (x = 0.0 and 0.1) have been elaborated and characterized. In addition to structural changes seen by this kind of doping, the magnetoresistance (MR) and resistivity are increased while the metal-insulator transition temperature is decreased. Comparing the experimental data with the theoretical models shows that in the metal-ferromagnetic region, the electrical behaviour of both samples is quite well described by a theory based on Kondo-like spin dependent scattering, electron-electron scattering, electron-phonon and electron-magnon scatterings. For the high temperature paramagnetic insulating regime, the adiabatic small polaron hopping model is found to fit well the experimental curves. (c) 2011 Elsevier B.V. All rights reserved.eninfo:eu-repo/semantics/closedAccessLanthanum Based ManganitesMagnetoresistance (MR)Metal-insulator TransitionDopingArticle10.1016/j.jallcom.2011.01.00850913451045152-s2.0-79952280779Q1WOS:000288833100012Q1