Room-temperature resistivities and PTCR properties of er-doped (Ba,Sr,Ca)TiO 3
- Authors
- Lee, J.A.[Lee, J.A.]; Han, Y.H.[Han, Y.H.]
- Issue Date
- 2009
- Keywords
- Batio 3; Ca; Er; Ptcr properties; Sr
- Citation
- Journal of the Korean Physical Society, v.55, no.2 PART 1, pp.770 - 775
- Indexed
- SCOPUS
KCI
- Journal Title
- Journal of the Korean Physical Society
- Volume
- 55
- Number
- 2 PART 1
- Start Page
- 770
- End Page
- 775
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/79290
- ISSN
- 0374-4884
- Abstract
- The effects of substitution of Sr and Ca at Ba sites on the positive temperature coefficient of resistance (PTCR) characteristics of Er-doped BaTiO 3 have been studied. In (Ba 0.996-xSr xEr 0.004) 0.997 TiO 3 system, the room-temperature resistivity (ρ 25) and temperature coefficient of resistance (TCR,α) decreased with increasing Sr content. As the SrO content was increased, the Curie temperature shifted to lower temperatures by 2.6 °C/mol%. The room-temperature resistivity also decreased with increasing CaO content in (Ba 0.996-yCa yEr 0.004) 0.997TiO 3. However, the shift in the Curie point was negligibly small with increasing CaO content. The system co-doped with 10 mol% SrO and 10 mol% CaO, (Ba 0.796Sr 0.10Ca 0.10Er 0.004) 0.997TiO 3, showed the lowest room-temperature resistivity (3.5 Ω-cm ).
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Engineering > School of Advanced Materials Science and Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.