naa a22 4500 51073409X CHVBK 20180411083003.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s12039-013-0423-9 doi (NATIONALLICENCE)springer-10.1007/s12039-013-0423-9 Magnetic properties of mixed valence La2/3Sr1/3Mn1 −  x T x O3 (T [Elektronische Daten] Fe,Cr) manganites obtained by Pechini method [I BETANCOURT, A MORALES-HERNÁNDEZ] Polycrystalline manganites of composition La2/3Sr1/3Mn1 − x T x O3 (T = Cr3 + or Fe3 + , x = 0.0-0.10) were obtained by the Pechini method. Their magnetic properties exhibited a marked dependence on Fe/Cr content, with significant reduction of the magnetic moment per formula unit and their Curie temperatures. In addition, the magnetocaloric effect, determined by isothermal magnetization measurements, displayed a decreasing tendency with increasing Fe/Cr concentration. Results were interpreted on the basis of a deleterious effect on the double exchange interaction provoked by the presence of Fe3 +  and Cr3 +  ions within the crystal structure. Graphical Abstract Polycrystalline mixed valence manganites of composition La2/3Sr1/3Mn1 − x T x O3 (T= Cr3 + or Fe3 + , x = 0.0-0.10) were obtained by the amorphous citrate process known as Pechini method. Their magnetic properties (Curie temperature and spontaneous magnetization) exhibited a marked dependence with Fe or Cr content, together with magnetic entropy variations of up to 2.0J/kgK. Indian Academy of Sciences, 2013 Mixed valence manganites nationallicence magnetic manganites nationallicence magnetocaloric effect nationallicence Pechini method nationallicence BETANCOURT I. Departamento de Materiales Metá licos y Cerámicos, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, 04510, México D.F., México aut MORALES-HERNÁNDEZ A. Departamento de Materiales Metá licos y Cerámicos, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, 04510, México D.F., México aut Journal of Chemical Sciences Springer-Verlag 125/3(2013-05-01), 667-672 0974-3626 125:3<667 2013 125 12039 https://doi.org/10.1007/s12039-013-0423-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0423-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- BETANCOURT I. Departamento de Materiales Metá licos y Cerámicos, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, 04510, México D.F., México aut NATIONALLICENCE 700 1- MORALES-HERNÁNDEZ A. Departamento de Materiales Metá licos y Cerámicos, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, 04510, México D.F., México aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer-Verlag 125/3(2013-05-01), 667-672 0974-3626 125:3<667 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer