The effects of TiO2 addition on the phase formation and microwave dielectric properties of CaLa4Ti5O17 ceramic

The ceramics in (1 − x) CaLa 4 Ti 5 O 17 -xTiO 2 (0 ≤ x ≤ 0.1) series were fabricated via conventional solid-state mix oxide sintering route. Their phase and microwave dielectric properties were investigated. Ca 0.1 La 0.60 TiO 3 formed as the major phase while CaLa 4 Ti 5 O 17 formed as secondary p...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2017-10, Vol.28 (20), p.15552-15555
Main Authors: Manan, Abdul, Liu, Hanxing, Khan, Javed, Hao, Hua, Ullah, Atta, Ahmad, Arbab Safeer
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composition
Dielectric properties
Materials Science
Optical and Electronic Materials
Titanium dioxide
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Summary:The ceramics in (1 − x) CaLa 4 Ti 5 O 17 -xTiO 2 (0 ≤ x ≤ 0.1) series were fabricated via conventional solid-state mix oxide sintering route. Their phase and microwave dielectric properties were investigated. Ca 0.1 La 0.60 TiO 3 formed as the major phase while CaLa 4 Ti 5 O 17 formed as secondary phase for the composition with x = 0. The addition of TiO 2 content suppressed the formation of the parent CaLa 4 Ti 5 O 17 phase that finally disappeared and Ca 0.1 La 0.60 TiO 3 was formed as the only phase. The addition of TiO 2 increased ε r , Q u f o and τ f values. In the present study, ε r  ~ 155, Q u f o  ~ 12678 GHz and τ f  ~ 8.9 was achieved for the composition with x = 0.1 sintered at 1450 °C for 4 h.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-017-7443-z