Effect of Microstructure on the PTCR Effect in Semiconducting Barium Titanate Ceramics

1981 ◽  
Vol 64 (11) ◽  
pp. 639-644 ◽  
Author(s):  
MAKOTO KUWABARA
Keyword(s):  
Barium Titanate ◽  
Ptcr Effect ◽  
Titanate Ceramics ◽  
Effect Of Microstructure

Impurity and Intrinsic Defects in Barium Titanate Ceramics and Their Influence on PTCR Effect

2003 ◽  
Vol 288 (1) ◽  
pp. 243-251 ◽  
Author(s):  
A. M. Slipenyuk ◽  
M. D. Glinchuk ◽  
V. V. Laguta ◽  
I. P. Bykov ◽  
A. G. Bilous ◽  
...  
Keyword(s):  
Barium Titanate ◽  
Intrinsic Defects ◽  
Ptcr Effect ◽  
Titanate Ceramics

scholarly journals Effect of Semiconductor Element Substitution on the Electric Properties of Barium Titanate Ceramics

2016 ◽  
Vol 61 (2) ◽  
pp. 887-890 ◽  
Author(s):  
B. Garbarz-Glos ◽  
A. Lisińska-Czekaj ◽  
D. Czekaj ◽  
W. Bąk
Keyword(s):  
Activation Energy ◽  
Barium Titanate ◽  
Structural Phase ◽  
Rhombohedral Phase ◽  
Positive Temperature Coefficient ◽  
Quantitative Composition ◽  
Positive Temperature ◽  
Ptcr Effect ◽  
Ion Substitution ◽  
Titanate Ceramics

Abstract The investigated ceramics were prepared by a solid-state reaction from simple oxides and carbonates with the use of a mixed oxide method (MOM). The morphology of BaTi0.96Si0.04O3 (BTSi04) ceramics was characterised by means of a scanning electron microscopy (SEM). It was found that Si+4 ion substitution supported the grain growth process in BT-based ceramics. The EDS results confirmed the high purity and expected quantitative composition of the synthesized material. The dielectric properties of the ceramics were also determined within the temperature range (ΔT=130-500K). It was found that the substitution of Si+4 ions had a significant influence on temperature behavior of the real (ε’) and imaginary (ε”) parts of electric permittivity as well as the temperature dependence of a.c. conductivity. Temperature regions of PTCR effect (positive temperature coefficient of resistivity) were determined for BTSi04 ceramics in the vicinity of structural phase transitions typical for barium titanate. No distinct maximum indicating a low-temperature structural transition to a rhombohedral phase in BTSi04 was found. The activation energy of conductivity was determined from the Arrhenius plots. It was found that substitution of Si ions in amount of 4wt.% caused almost 50% decrease in an activation energy value.

DC AND AC ELECTRICAL PROPERTIES OF PTC BARIUM TITANATE CERAMICS

1990 ◽  
Vol 51 (C1) ◽  
pp. C1-979-C1-984
Author(s):  
S. HISHITA ◽  
J. F. BAUMARD ◽  
P. ABELARD
Keyword(s):  
Electrical Properties ◽  
Barium Titanate ◽  
Ac Electrical Properties ◽  
Titanate Ceramics

Defect properties of cobalt-doped hexagonal barium titanate ceramics

2015 ◽  
Vol 27 (29) ◽  
pp. 295901 ◽  
Author(s):  
H T Langhammer ◽  
R Böttcher ◽  
T Müller ◽  
T Walther ◽  
S G Ebbinghaus
Keyword(s):  
Barium Titanate ◽  
Titanate Ceramics
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