Title of article
Sintering behavior and electrical properties of porous (Ba,Sr)(Ti,Sb)O3 ceramics produced by adding corn-starch
Author/Authors
Jun-Gyu Kim، نويسنده , , Youngjae Kwon، نويسنده , , Jae-Hee Oh، نويسنده , , Won-Seung Cho، نويسنده , , Namhee Cho، نويسنده , , Chin Myung Whang، نويسنده , , Yeon-Chul Yoo، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2004
Pages
5
From page
217
To page
221
Abstract
Porous (Ba,Sr)(Ti,Sb)O3 ceramics were fabricated by adding corn-starch (1–20 wt.%) and effect of sintering condition on the PTCR characteristics of the porous ceramics was investigated. The room-temperature electrical resistivity of the (Ba,Sr)(Ti,Sb)O3 ceramics was decreased and increased with increasing sintering temperature and sintering time, respectively. The former was attributed mainly to the increase of grain size as well as the partial decrease of the porosity, and the latter was due to the increase of the electrical barrier height of grain boundaries. The sample sintered at 1450 °C for 1 h showed the excellent PTCR characteristics, i.e. the lowest room-temperature resistivity (8.4×10 Ω cm) with the high ratio of maximum resistivity to minimum resistivity (6.3×105).
Keywords
Porous semiconducting (Ba , Sb)O3 , PTCR , Sintering temperature , Sintering time , Sr)(Ti
Journal title
Materials Chemistry and Physics
Serial Year
2004
Journal title
Materials Chemistry and Physics
Record number
1062155
Link To Document