Positive temperature coefficient of resistivity effect of semiconducting BaTiO3-(Bi1/2Na1/2)TiO3 ceramics prepared by a wet-chemistry route

Ping Hua Xiang; Hiroaki Takeda; Tadashi Shiosaki

doi:10.1143/JJAP.46.6995

Positive temperature coefficient of resistivity effect of semiconducting BaTiO₃-(Bi_1/2Na_1/2)TiO₃ ceramics prepared by a wet-chemistry route

Ping Hua Xiang^*
, Hiroaki Takeda
, Tadashi Shiosaki

^*Corresponding author for this work

Nara Institute of Science and Technology

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

34 Scopus citations

Abstract

Without any additional donor dopants, BaTiO₃-(Bi _1/2Na_1/2)TiO₃ (BT-BNT) positive temperature coefficient of resistivity (PTCR) ceramics were successfully prepared by a wet-chemistry route. With 2 mol% BNT addition, the obtained BT-BNT ceramics had semiconductivity and exhibited a PTCR behavior at about 155°C. The onset temperature of the PTCR effect increased to ∼165 °C for the 4 mol% BNT added samples. Room-temperature resistivity ρRT increased with the content of BNT added and the ceramics changed from a semiconductor to an insulator, which was consistent with the variation of the microstructure. The temperature of resistivity anomaly in BT-BNT ceramics also increased with increasing BNT content. A small amount of manganese (Mn) dopant was found to improve the PTCR effect in the BT-BNT system. The possible mechanism underlying the PTCR effect in BT-BNT ceramics was proposed.

Original language	English
Pages (from-to)	6995-6998
Number of pages	4
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	46
Issue number	10 B
DOIs	https://doi.org/10.1143/JJAP.46.6995
State	Published - 22 Oct 2007
Externally published	Yes

Keywords

(BiNa)TiO
BaTiO
Bismuth
Lead-free materials
Manganese
PTCR

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10.1143/JJAP.46.6995

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@article{e15056adc4a44c4ca20152d753f96379,

title = "Positive temperature coefficient of resistivity effect of semiconducting BaTiO3-(Bi1/2Na1/2)TiO3 ceramics prepared by a wet-chemistry route",

abstract = "Without any additional donor dopants, BaTiO3-(Bi 1/2Na1/2)TiO3 (BT-BNT) positive temperature coefficient of resistivity (PTCR) ceramics were successfully prepared by a wet-chemistry route. With 2 mol\% BNT addition, the obtained BT-BNT ceramics had semiconductivity and exhibited a PTCR behavior at about 155°C. The onset temperature of the PTCR effect increased to ∼165 °C for the 4 mol\% BNT added samples. Room-temperature resistivity ρRT increased with the content of BNT added and the ceramics changed from a semiconductor to an insulator, which was consistent with the variation of the microstructure. The temperature of resistivity anomaly in BT-BNT ceramics also increased with increasing BNT content. A small amount of manganese (Mn) dopant was found to improve the PTCR effect in the BT-BNT system. The possible mechanism underlying the PTCR effect in BT-BNT ceramics was proposed.",

keywords = "(BiNa)TiO, BaTiO, Bismuth, Lead-free materials, Manganese, PTCR",

author = "Xiang, \{Ping Hua\} and Hiroaki Takeda and Tadashi Shiosaki",

year = "2007",

month = oct,

day = "22",

doi = "10.1143/JJAP.46.6995",

language = "英语",

volume = "46",

pages = "6995--6998",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers",

issn = "0021-4922",

publisher = "Institute of Physics",

number = "10 B",

}

Positive temperature coefficient of resistivity effect of semiconducting BaTiO₃-(Bi_1/2Na_1/2)TiO₃ ceramics prepared by a wet-chemistry route. / Xiang, Ping Hua; Takeda, Hiroaki; Shiosaki, Tadashi.
In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 46, No. 10 B, 22.10.2007, p. 6995-6998.

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

TY - JOUR

T1 - Positive temperature coefficient of resistivity effect of semiconducting BaTiO3-(Bi1/2Na1/2)TiO3 ceramics prepared by a wet-chemistry route

AU - Xiang, Ping Hua

AU - Takeda, Hiroaki

AU - Shiosaki, Tadashi

PY - 2007/10/22

Y1 - 2007/10/22

N2 - Without any additional donor dopants, BaTiO3-(Bi 1/2Na1/2)TiO3 (BT-BNT) positive temperature coefficient of resistivity (PTCR) ceramics were successfully prepared by a wet-chemistry route. With 2 mol% BNT addition, the obtained BT-BNT ceramics had semiconductivity and exhibited a PTCR behavior at about 155°C. The onset temperature of the PTCR effect increased to ∼165 °C for the 4 mol% BNT added samples. Room-temperature resistivity ρRT increased with the content of BNT added and the ceramics changed from a semiconductor to an insulator, which was consistent with the variation of the microstructure. The temperature of resistivity anomaly in BT-BNT ceramics also increased with increasing BNT content. A small amount of manganese (Mn) dopant was found to improve the PTCR effect in the BT-BNT system. The possible mechanism underlying the PTCR effect in BT-BNT ceramics was proposed.

AB - Without any additional donor dopants, BaTiO3-(Bi 1/2Na1/2)TiO3 (BT-BNT) positive temperature coefficient of resistivity (PTCR) ceramics were successfully prepared by a wet-chemistry route. With 2 mol% BNT addition, the obtained BT-BNT ceramics had semiconductivity and exhibited a PTCR behavior at about 155°C. The onset temperature of the PTCR effect increased to ∼165 °C for the 4 mol% BNT added samples. Room-temperature resistivity ρRT increased with the content of BNT added and the ceramics changed from a semiconductor to an insulator, which was consistent with the variation of the microstructure. The temperature of resistivity anomaly in BT-BNT ceramics also increased with increasing BNT content. A small amount of manganese (Mn) dopant was found to improve the PTCR effect in the BT-BNT system. The possible mechanism underlying the PTCR effect in BT-BNT ceramics was proposed.

KW - (BiNa)TiO

KW - BaTiO

KW - Bismuth

KW - Lead-free materials

KW - Manganese

KW - PTCR

UR - https://www.scopus.com/pages/publications/35348999619

U2 - 10.1143/JJAP.46.6995

DO - 10.1143/JJAP.46.6995

M3 - 文章

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SN - 0021-4922

VL - 46

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JO - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

IS - 10 B

ER -

Positive temperature coefficient of resistivity effect of semiconducting BaTiO₃-(Bi_1/2Na_1/2)TiO₃ ceramics prepared by a wet-chemistry route

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Keywords

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