caa a22 4500 445827009 CHVBK 20180317145302.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10854-011-0333-x doi (NATIONALLICENCE)springer-10.1007/s10854-011-0333-x Influence of doping Nb5+ and Mn2+ on the PTCR effects of Ba0.92Ca0.05(Bi0.5Na0.5)0.03TiO3 ceramics [Elektronische Daten] [Yongping Pu, Haidong Wu, Jifeng Wei, Bo Wang] As a positive temperature coefficient of resistivity (PTCR) material, Ba0.92Ca0.05(Bi0.5Na0.5)0.03TiO3 ceramics with donor doping of Nb5+ and acceptor doping of Mn2+ were prepared by a conventional mixed oxide method. The influence of contents of Nb5+ and Mn2+ on the microstructure and PTCR characteristics of Ba0.92Ca0.05(Bi0.5Na0.5)0.03TiO3 ceramics sintered at 1,360°C for 2h was investigated. The result showed that the Curie temperature (T c) was shifted to a lower temperature with increasing of the content of Nb5+ and the resistance jump (ρmax/ρmin) was enhanced with doping of Mn2+. The grain size of ceramic sample decreased with increasing of contents of donor Nb5+ and acceptor Mn2+. The Ba0.92Ca0.05(Bi0.5Na0.5)0.03TiO3 ceramic with 0.4mol%Nb5+ and 0.04mol%Mn2+ exhibited a low ρRT of 5.0×102Ωcm, a typical PTCR effect of ρmax/ρmin>103, and a T c of 158°C. Springer Science+Business Media, LLC, 2011 Pu Yongping School of Materials Science & Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, China aut Wu Haidong School of Materials Science & Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, China aut Wei Jifeng School of Materials Science & Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, China aut Wang Bo School of Materials Science & Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, China aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/9(2011-09-01), 1479-1482 0957-4522 22:9<1479 2011 22 10854 https://doi.org/10.1007/s10854-011-0333-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-011-0333-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pu Yongping School of Materials Science & Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, China aut NATIONALLICENCE 700 1- Wu Haidong School of Materials Science & Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, China aut NATIONALLICENCE 700 1- Wei Jifeng School of Materials Science & Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, China aut NATIONALLICENCE 700 1- Wang Bo School of Materials Science & Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, China aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/9(2011-09-01), 1479-1482 0957-4522 22:9<1479 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer