caa a22 4500 445828676 CHVBK 20180317145307.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10854-010-0176-x doi (NATIONALLICENCE)springer-10.1007/s10854-010-0176-x Fabrication of high T c lead free (1− x )BaTiO3- x Bi0.5K0.5TiO3 positive temperature coefficient of resistivity ceramics using reoxidation method [Elektronische Daten] [Jifeng Wei, Yongping Pu, Yuqin Mao, Haidong Wu] (1-x)BaTiO3−xBi0.5K0.5TiO3 (abbreviated as BT-BKT, where x=0, 0.1 and 0.2) ceramics were prepared by solid state reaction method. All ceramic samples were sintered in a pure N2 flow atmosphere, subsequently reoxidized at a temperature range of 800-1,100°C in air for several hours. The influences of BKT content and reoxidation on the positive temperature coefficient of resistivity (PTCR) behavior of ceramic samples were investigated. BT-BKT ceramic samples sintered in N2 possessed relatively low room temperature resistivity (ρRT) and showed weak PTC effect. Through an appropriate reoxidation, the ceramic samples re-obtained PTC effect of almost three orders of magnitude. With the addition of BKT, the Curie temperature (Tc) was enhanced by ~50°C than the pure BT ceramics. Springer Science+Business Media, LLC, 2010 Wei Jifeng School of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021, Xiang, China aut Pu Yongping School of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021, Xiang, China aut Mao Yuqin School of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021, Xiang, China aut Wu Haidong School of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021, Xiang, China aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/5(2011-05-01), 551-554 0957-4522 22:5<551 2011 22 10854 https://doi.org/10.1007/s10854-010-0176-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0176-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wei Jifeng School of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021, Xiang, China aut NATIONALLICENCE 700 1- Pu Yongping School of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021, Xiang, China aut NATIONALLICENCE 700 1- Mao Yuqin School of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021, Xiang, China aut NATIONALLICENCE 700 1- Wu Haidong School of Materials Science and Engineering, Shaanxi University of Science and Technology, 710021, Xiang, China aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/5(2011-05-01), 551-554 0957-4522 22:5<551 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer