Abnormal behavior of B2O3 vapor dopants in BaTiO3 based PTCR ceramics

被引：0

作者：

Qi, JQ ^{[1
]}

Li, LT ^{[1
]}

Zhu, Q ^{[1
]}

Wang, YL ^{[1
]}

Gui, ZL ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF INORGANIC MATERIALS | 2001年 / 16卷 / 04期

关键词：

B2O3; BaTiO3; PTCR;

D O I：

暂无

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The PTCR (Positive Temperature Coefficient Resistivity) effect of BaTiO3 based semiconducting ceramics is usually allied to the donor or acceptor. B2O3 with high vapor pressure at high temperatures can be used as vapor dopants. The behavior of B2O3 vapor dopants was studied in BaTiO3 based semiconducting ceramics. The dramatic results show that the resistivity jumping of the samples is improved distinctly, in the mean time, the room temperature resistivity is also increased. The enhancement of the PTCR effect of the samples doped with B2O3 va,por is possibly associated with the interstice of boron ion and barium vacancy or their related composite defects.

引用

页码：739 / 741

页数：3

共 9 条

[1] PTC EFFECT IN BATIO3 AS A FUNCTION OF DOPING WITH 3D ELEMENTS [J].

IHRIG, H .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1981, 64 (10) :617-620

[2] ELECTRON-PARAMAGNETIC-RES EVIDENCE FOR ACTIVATION OF TRAP CENTERS IN PTCR BATIO3 CERAMICS [J].

KUTTY, TRN ;

MURUGARAJ, P ;

GAJBHIYE, NS .

MATERIALS RESEARCH BULLETIN, 1985, 20 (05) :565-574

[3] Effect of charge redistribution through secondary phase formation on PTCR characteristics of n-BaTiO3 ceramics [J].

Kutty, TRN ;

Hari, NS .

MATERIALS LETTERS, 1998, 34 (1-2) :43-49

[4] PTCR BEHAVIOR OF BATIO3 WITH NB2O5 AND MNO2 ADDITIVES [J].

MATSUOKA, T ;

MATSUO, Y ;

SASAKI, H ;

HAYAKAWA, S .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1972, 55 (02) :108-&

[5] Positive temperature coefficient resistance effect in Ba1-xSrxTiO3 ceramics modified with Bi2O3 and PbO by a vapor-doping method [J].

Qi, JQ ;

Gui, ZL ;

Li, LT ;

Wu, YJ .

JOURNAL OF MATERIALS RESEARCH, 1999, 14 (08) :3328-3329

[6]

Qi JQ, 1999, J INORG MATER, V14, P408

[7]

Qi JQ, 1998, J AM CERAM SOC, V81, P437

[8]

Qi JQ, 1998, TECHNICAL DIGEST OF THE SEVENTH INTERNATIONAL MEETING ON CHEMICAL SENSORS, P761

[9]

QI TQ, 1997, J MATER SCI, V32, P713

← 1 →