Microstructure Characteristics and Electrical Properties of Sintered (Bi,La)4Ti3O12 Ferroelectric Ceramics

H.S. Yoo; Y.H. Son; Tae Whan Hong; Soon Chul Ur; Sung Lim Ryu; Soon Young Kweon

doi:10.4028/www.scientific.net/MSF.534-536.565

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HomeMaterials Science ForumMaterials Science Forum Vols. 534-536Microstructure Characteristics and Electrical...

Microstructure Characteristics and Electrical Properties of Sintered (Bi,La)₄Ti₃O₁₂ Ferroelectric Ceramics

Abstract:

1mm-thick BLT ceramics were sintered in accordance with a bulk ceramic fabrication process. All XRD peaks detected in the sintered ceramics were indexed as the Bi-layered perovskite structure without secondary phases. Density was increased with increasing the sintering temperature up to 1050°C and the maximum value was about 98% of the theoretical density. The remanent polarization (2Pr) value of BLT ceramic sintered at 1050°C was approximately 6.5 μC/cm2 at the applied voltage of 4.5kV. The calculated electromechanical couping factor (kt) of it was about 5% and the mechanical quality factor (Qm) was about 2200. From these results, a BLT ceramic target for plused laser deposition (PLD) system was successfully fabricated.

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Materials Science Forum (Volumes 534-536)

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565-568

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.565

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Online since:

January 2007

Authors:

H.S. Yoo, Y.H. Son, Tae Whan Hong, Soon Chul Ur, Sung Lim Ryu, Soon Young Kweon

Keywords:

(Bi,La)₄Ti₃O₁₂, Electrical Properties, Ferroelectric Ceramics, Microstructure, Sintering

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