caa a22 4500 463233298 CHVBK 20180405153248.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s10853-006-0749-5 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0749-5 The influence of aluminium on the overall properties of SnO2-based varistors [Elektronische Daten] [Rodrigo Parra, Yves Maniette, José Varela, Miriam Castro] The influence of aluminium on the development of the microstructure and on the electrical behaviour of the SnO2·Co3O4·Nb2O5 typical varistor system was studied. Two sources of Al were used, alumina (Al2O3) and boehmite (AlO(OH)). The microstructural features were characterised with scanning (SEM) and transmission (TEM) electron microscopies. The different phases present in the studied samples were also studied with XRD, EDS and electron diffraction patterns of selected areas (SAED). Particles containing Sn, Co, Al, and O were unveiled with TEM. Impedance spectroscopy measurements and current density versus electric field characteristics revealed superior electrical properties for samples with AlO(OH). The higher non-linearity (α=19) was achieved with the addition of 0.1%mol of boehmite. The influence of the secondary phases on the electrical properties is also addressed in this work. Springer Science+Business Media, LLC, 2007 Parra Rodrigo Instituto de Investigaciones en Ciencia y Tecnología de Materiales, (INTEMA, CONICET-UNMdP), J.B. Justo 4302, B7608FDQ, Mar del Plata, Argentina aut Maniette Yves Instituto de Química, UNESP, PO Box 355, 14801-970, Araraquara, Brazil aut Varela José Instituto de Química, UNESP, PO Box 355, 14801-970, Araraquara, Brazil aut Castro Miriam Instituto de Investigaciones en Ciencia y Tecnología de Materiales, (INTEMA, CONICET-UNMdP), J.B. Justo 4302, B7608FDQ, Mar del Plata, Argentina aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/13(2007-07-01), 4832-4837 0022-2461 42:13<4832 2007 42 10853 https://doi.org/10.1007/s10853-006-0749-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0749-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Parra Rodrigo Instituto de Investigaciones en Ciencia y Tecnología de Materiales, (INTEMA, CONICET-UNMdP), J.B. Justo 4302, B7608FDQ, Mar del Plata, Argentina aut NATIONALLICENCE 700 1- Maniette Yves Instituto de Química, UNESP, PO Box 355, 14801-970, Araraquara, Brazil aut NATIONALLICENCE 700 1- Varela José Instituto de Química, UNESP, PO Box 355, 14801-970, Araraquara, Brazil aut NATIONALLICENCE 700 1- Castro Miriam Instituto de Investigaciones en Ciencia y Tecnología de Materiales, (INTEMA, CONICET-UNMdP), J.B. Justo 4302, B7608FDQ, Mar del Plata, Argentina aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/13(2007-07-01), 4832-4837 0022-2461 42:13<4832 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer