caa a22 4500 463221508 CHVBK 20180405153213.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10853-006-1400-1 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1400-1 Properties of barium-strontium titanate PTCR ceramics sintered on different powder beds [Elektronische Daten] [Pornsuda Bomlai, Steven Milne] Barium-strontium titanate (BST) ceramics, co-doped with Sb and Mn oxides, were sintered on different powder beds: Sb-doped BST; Al2O3; or Sb,Mn-codoped BST powder. Phase formation, microstructure and the electrical properties of the samples were analysed. The PTCR behavior depended significantly on the type of powder bed used. The BST ceramic pellet sintered on the Sb-BST powder displayed the largest PTCR effect, with a ρmax/ρRT ratio of ∼106. This was an order of magnitude greater than for samples sintered on the other two powders. Complex impedance analysis confirmed that this was due to a large increase in grain boundary resistance at 250°C. Springer Science+Business Media, LLC, 2007 Bomlai Pornsuda Materials Science Program, Faculty of Science, Prince of Songkla University, 90112, Songkhla, Thailand aut Milne Steven Institute for Materials Research, University of Leeds, LS2 9JT, Leeds, UK aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6803-6808 0022-2461 42:16<6803 2007 42 10853 https://doi.org/10.1007/s10853-006-1400-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1400-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bomlai Pornsuda Materials Science Program, Faculty of Science, Prince of Songkla University, 90112, Songkhla, Thailand aut NATIONALLICENCE 700 1- Milne Steven Institute for Materials Research, University of Leeds, LS2 9JT, Leeds, UK aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6803-6808 0022-2461 42:16<6803 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer