%0 Journal Article
%A Romero, J.J.
%A Cuadrado, R.
%A Arroyo, A.
%A García, M. A.
%A Hernando Grande, Antonio
%A Cortés Gil, R
%A González Calbet, J. M.
%A Vallet Regí, V.
%T Temperature dependence of the magnetic properties in LaMnO_(3+δ)
%D 2006
%@ 0021-8979
%U https://hdl.handle.net/20.500.14352/52092
%X 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.
%~