Synthesis of Ba0.7Sr0.3TiO3 ceramics via hybrid method

Barium strontium titanate (BST) ceramics were prepared by the hybrid method between Solid-state reaction and Sol-gel combustion methods using urea as a fuel. The crystalline powders were prepared by the mixed precursors between Solid-state reaction: Solgel combustion with the molar ratio of 1:0.3 an...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-12, Vol.1144 (1)
Main Authors: Budkhod, P, Srivichai, N, Thountom, S
Format: Article
Language:English
Subjects:
Barium strontium titanates
Ceramic powders
Ceramics
Combustion
Crystal structure
Dielectric loss
Perovskite structure
Perovskites
Roasting
Sintering
Sintering (powder metallurgy)
Sol-gel processes
Solid state
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Summary:Barium strontium titanate (BST) ceramics were prepared by the hybrid method between Solid-state reaction and Sol-gel combustion methods using urea as a fuel. The crystalline powders were prepared by the mixed precursors between Solid-state reaction: Solgel combustion with the molar ratio of 1:0.3 and calcined at 950°C for 2 hours. The BST ceramics were fabricated from calcined powders by sintering at 1050-1350°C and instigated the crystal structures by XRD. All sintering samples have a pure perovskite structure corresponding to JCPDS no. 34-0411. The SEM revealed an increasing of a gain size when with increasing sintering temperature. The highest dielectric constant 11580 was found in the sample prepared at 1350°C for 4 hours with dielectric loss of 0.007.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1144/1/012163