Romero, J.J.Cuadrado, R.Arroyo, A.García, M. A.Hernando Grande, AntonioCortés Gil, RGonzález Calbet, José MaríaVallet Regí, María Dulce Nombre2023-06-202023-06-20© 2006 Ame2006-04-150021-897910.1063/1.2150388https://hdl.handle.net/20.500.14352/52092One of the authors J.J.R. acknowledges Ministerio de Educación y Ciencia of Spain for his “Juan de la Cierva” contract.Data are presented on the thermal dependence of the hysteretic properties of cationic vacancies including manganite samples of composition LaMnO_(3+δ)(δ=0.05 and 0.12). Our results evidence the presence in both samples of two magnetic phases having ferro- and antiferromagnetic orders, respectively. The temperature dependence of the coercivity and relaxational properties of the samples is closely linked to the connectivity of the magnetic moment bearing Mn^(3+)-Mn^(4+) ferromagnetic clusters that demagnetize independently in the case of the δ=0.05 sample and collectively in that of the δ=0.12 one, as evidenced from the activation volume results (delta=0.05) which yielded a size of the same order magnitude as that obtained in previous works for the Mn^(3+)-Mn^(4+) ferromagnetic cluster size.engjournal articlehttp://dx.doi.org/10.1063/1.2150388http://aip.scitation.orgopen access538.9PhysicsAppliedFísica de materialesFísica del estado sólido2211 Física del Estado Sólido