caa a22 4500 46322213X CHVBK 20180405153215.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10853-007-1495-z doi (NATIONALLICENCE)springer-10.1007/s10853-007-1495-z Effects of oxygen partial pressure control on the microstructure and PTCR properties of Ho doped BaTiO3 [Elektronische Daten] [Soo Jo, Young Han, Kwang Choi] Effects of oxygen partial pressure ( $$ {\hbox{P}}_{{\hbox{O}}_{\hbox{2}} } $$ ) control on the electrical properties and microstructural development of (Ba1-xHox)0.997TiO3 were studied. An oxidation condition ( $$ {\hbox{P}}_{{\hbox{O}}_{\hbox{2}} } $$ ∼1.0atm) was maintained during the heating process, and then the specimen was sintered in a reducing atmosphere ( $$ {\hbox{P}}_{{\hbox{O}}_{\hbox{2}} } $$ <10−9atm) at 1350°C, followed by the annealing process at 1000°C and $$ {\hbox{P}}_{{\hbox{O}}_{\hbox{2}} } $$ =1atm. The switching temperature (TS) from the oxidation atmosphere to the reducing condition was changed from 1100 to 1350°C. A significant decrease in the room-temperature resisitivity (ρ25) was observed as TS was increased. The temperature coefficient of resistance (TCR) was independent of the change in TS, and closed pores decreased with increasing TS. Springer Science+Business Media, LLC, 2007 Jo Soo Department of Materials Engineering, Sungkyunkwan University, 300 Chunchun-dong, 440-746, Jangan-gu, Suwon, Korea aut Han Young Department of Materials Engineering, Sungkyunkwan University, 300 Chunchun-dong, 440-746, Jangan-gu, Suwon, Korea aut Choi Kwang Joinset Co., Ltd, 425-110, Ansan, Korea aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6696-6700 0022-2461 42:16<6696 2007 42 10853 https://doi.org/10.1007/s10853-007-1495-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1495-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jo Soo Department of Materials Engineering, Sungkyunkwan University, 300 Chunchun-dong, 440-746, Jangan-gu, Suwon, Korea aut NATIONALLICENCE 700 1- Han Young Department of Materials Engineering, Sungkyunkwan University, 300 Chunchun-dong, 440-746, Jangan-gu, Suwon, Korea aut NATIONALLICENCE 700 1- Choi Kwang Joinset Co., Ltd, 425-110, Ansan, Korea aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6696-6700 0022-2461 42:16<6696 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer