NDLI: Dielectric Ba(Ti$_{1−x }$Sn$_{x}$)O$_{3}$ (x = 0.13) ceramics, sintered by spark plasma and conventional methods

Content Provider	Springer Nature Link
Author	Aldica, Gheorghe Cernea, Marin Ganea, Paul
Copyright Year	2010
Abstract	A two-step sintering approach composed of spark-plasma-sintering (SPS) technique at 1000 °C for 1 min and under a uniaxial pressure of 63 MPa followed by conventional sintering at 1400 °C for 3 h is proposed for synthesis of dense Ba(Ti$_{0.87}$Sn$_{0.13}$)O$_{3}$ ceramics. Starting powders had grain size of about 90 nm and were obtained by co-precipitation. The SPS pellets consist of submicron (300–500 nm) grains. X-ray diffraction analysis of as-prepared Ba(Ti$_{0.87}$Sn$_{0.13}$)O$_{3}$ ceramic shows the occurrence of cubic and tetragonal phase coexistence for the pellets obtained after SPS processing and the presence of only tetragonal phase in the samples after the second (conventional) sintering. Grain uniformity in the final product is high, with average size of ~2 μm. The apparent densities of the sintered pellets at temperature of 1400 °C were ~92% of the theoretical value of Ba(Ti$_{0.87}$Sn$_{0.13}$)O$_{3}$. The ceramics exhibit a high relative dielectric constant of 6,550 and a dielectric loss (tan δ) = 0.078 at Curie temperature of 63 °C and 10 Hz.
Starting Page	2606
Ending Page	2610
Page Count	5
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	45
Issue Number	10
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2010-01-26
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mechanics Crystallography Continuum Mechanics and Mechanics of Materials Polymer Sciences Characterization and Evaluation of Materials Materials Science
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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