Unusual structural-disorder stability of mechanochemically derived-Pb(Sc0.5Nb0.5)O3. Issue 39 (22nd September 2015)

• Record Type: Journal Article
• Authors: Uršič, Hana; Benčan, Andreja; Dražič, Goran; Esteves, Giovanni; Jones, Jacob L.; Usher, Tedi-Marie; Rojac, Tadej; Drnovšek, Silvo; Deluca, Marco; Jouin, Jenny; Bobnar, Vid; Trefalt, Gregor; Holc, Janez; Malič, Barbara
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 39(2015)
• Page Start: 10309
• Page End: 10315
• Publication Date: 2015-09-22
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c5tc02205c
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : This study demonstrates the important effect of processing on the B-site ordering in Pb(Sc0.5 Nb0.5 )O3 ceramics. Abstract : This study demonstrates the important effect of processing on the B-site ordering in Pb(Sc0.5 Nb0.5 )O3 ceramics. In contradiction to previous observations on ceramics prepared from solid state synthesis powders, which show a distinctive B-site cation ordering when annealed below ∼1200 °C, in mechanochemically derived ceramics sintered 200 °C below this temperature, we do not observe such ordering, regardless of the conditions of thermal post-annealing. Accordingly, atomic-scale transmission electron microscopy revealed nanometer-sized B-site ordered regions in mechanochemically derived ceramics contrary to the larger regions extending through the whole grains in solid-state derived ceramics.