Fabrication and positive temperature coefficient of resistivity properties of semiconducting ceramics based on the BaTiO3-(Bi1/2K1/2)TiO3 system

H. Takeda; H. Harinaka; T. Shiosaki; M. A. Zubair; C. Leach; R. Freer; T. Hoshina; T. Tsurumi

doi:10.1016/j.jeurceramsoc.2009.08.009

Fabrication and positive temperature coefficient of resistivity properties of semiconducting ceramics based on the BaTiO3-(Bi1/2K1/2)TiO3 system

H. Takeda, H. Harinaka, T. Shiosaki, M. A. Zubair, C. Leach, R. Freer, T. Hoshina, T. Tsurumi

Research output: Contribution to journal › Article › peer-review

Abstract

BaTiO3-(Bi1/2K1/2)TiO3 (BT-BKT) ceramics have a low ρRT of 101-102 Ω cm like that of semiconducting materials prepared by sintering in a N2 flow with low O2 concentration. By annealing in air, the BT-BKT ceramics show an abrupt increase in their resistivity near the Tc, namely, a positive temperature coefficient of resistivity (PTC) characteristic. With 5 mol% and 10 mol% BKT added to BT, the ceramics display the PTC characteristic at 155 °C and 165 °C, respectively. Furthermore, the ratio, ρmax/ρRT, of the highest resistivity (ρmax) and the resistivity at room temperature (ρRT) of the ceramics increased on adding a small amount of Mn and a sintering aid. © 2009 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	555-559
Number of pages	4
Journal	Journal of the European Ceramic Society
Volume	30
Issue number	2
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2009.08.009
Publication status	Published - Jan 2010

Keywords

BaTiO3 and titanates
PTC devices

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10.1016/j.jeurceramsoc.2009.08.009

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@article{d401f97cf92542cfae2bf19bb3a3334c,

title = "Fabrication and positive temperature coefficient of resistivity properties of semiconducting ceramics based on the BaTiO3-(Bi1/2K1/2)TiO3 system",

abstract = "BaTiO3-(Bi1/2K1/2)TiO3 (BT-BKT) ceramics have a low ρRT of 101-102 Ω cm like that of semiconducting materials prepared by sintering in a N2 flow with low O2 concentration. By annealing in air, the BT-BKT ceramics show an abrupt increase in their resistivity near the Tc, namely, a positive temperature coefficient of resistivity (PTC) characteristic. With 5 mol% and 10 mol% BKT added to BT, the ceramics display the PTC characteristic at 155 °C and 165 °C, respectively. Furthermore, the ratio, ρmax/ρRT, of the highest resistivity (ρmax) and the resistivity at room temperature (ρRT) of the ceramics increased on adding a small amount of Mn and a sintering aid. {\textcopyright} 2009 Elsevier Ltd. All rights reserved.",

keywords = "BaTiO3 and titanates, PTC devices",

author = "H. Takeda and H. Harinaka and T. Shiosaki and Zubair, {M. A.} and C. Leach and R. Freer and T. Hoshina and T. Tsurumi",

year = "2010",

month = jan,

doi = "10.1016/j.jeurceramsoc.2009.08.009",

language = "English",

volume = "30",

pages = "555--559",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

publisher = "Elsevier BV",

number = "2",

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TY - JOUR

T1 - Fabrication and positive temperature coefficient of resistivity properties of semiconducting ceramics based on the BaTiO3-(Bi1/2K1/2)TiO3 system

AU - Takeda, H.

AU - Harinaka, H.

AU - Shiosaki, T.

AU - Zubair, M. A.

AU - Leach, C.

AU - Freer, R.

AU - Hoshina, T.

AU - Tsurumi, T.

PY - 2010/1

Y1 - 2010/1

N2 - BaTiO3-(Bi1/2K1/2)TiO3 (BT-BKT) ceramics have a low ρRT of 101-102 Ω cm like that of semiconducting materials prepared by sintering in a N2 flow with low O2 concentration. By annealing in air, the BT-BKT ceramics show an abrupt increase in their resistivity near the Tc, namely, a positive temperature coefficient of resistivity (PTC) characteristic. With 5 mol% and 10 mol% BKT added to BT, the ceramics display the PTC characteristic at 155 °C and 165 °C, respectively. Furthermore, the ratio, ρmax/ρRT, of the highest resistivity (ρmax) and the resistivity at room temperature (ρRT) of the ceramics increased on adding a small amount of Mn and a sintering aid. © 2009 Elsevier Ltd. All rights reserved.

AB - BaTiO3-(Bi1/2K1/2)TiO3 (BT-BKT) ceramics have a low ρRT of 101-102 Ω cm like that of semiconducting materials prepared by sintering in a N2 flow with low O2 concentration. By annealing in air, the BT-BKT ceramics show an abrupt increase in their resistivity near the Tc, namely, a positive temperature coefficient of resistivity (PTC) characteristic. With 5 mol% and 10 mol% BKT added to BT, the ceramics display the PTC characteristic at 155 °C and 165 °C, respectively. Furthermore, the ratio, ρmax/ρRT, of the highest resistivity (ρmax) and the resistivity at room temperature (ρRT) of the ceramics increased on adding a small amount of Mn and a sintering aid. © 2009 Elsevier Ltd. All rights reserved.

KW - BaTiO3 and titanates

KW - PTC devices

U2 - 10.1016/j.jeurceramsoc.2009.08.009

DO - 10.1016/j.jeurceramsoc.2009.08.009

M3 - Article

SN - 0955-2219

VL - 30

SP - 555

EP - 559

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 2

ER -

Fabrication and positive temperature coefficient of resistivity properties of semiconducting ceramics based on the BaTiO3-(Bi1/2K1/2)TiO3 system

Abstract

Keywords

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