Ferroelectric, dielectric and piezoelectric properties of potassium lanthanum bismuth titanate K0.5La0.5Bi4Ti4O15 ceramics

The Aurivillius type bismuth layer-structured compound potassium lanthanum bismuth titanate (K0.5La0.5Bi4Ti4O15) is synthesized using conventional solid-state processing. The phase analysis is performed by X-ray diffraction (XRD) and the microstructural morphology is conducted by scanning electron m...

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Bibliographic Details
Published in:Materials chemistry and physics 2008-08, Vol.110 (2-3), p.402-405
Main Authors: Wang, Chun-Ming, Wang, Jin-Feng, Gai, Zhi-Gang, Zhao, Ming-Lei, Zhao, Liang, Xu, Jian-Xiu, Yin, Na, Zhang, Cheng-Ju, Sun, Shang-Qian, Zang, Guo-Zhong, Chu, Rui-Qing, Xu, Zhi-Jun
Format: Article
Language:English
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Summary:The Aurivillius type bismuth layer-structured compound potassium lanthanum bismuth titanate (K0.5La0.5Bi4Ti4O15) is synthesized using conventional solid-state processing. The phase analysis is performed by X-ray diffraction (XRD) and the microstructural morphology is conducted by scanning electron microscopy (SEM). The ferroelectric, dielectric and piezoelectric properties of K0.5La0.5Bi4Ti4O15 (KLBT) ceramics are investigated in detail. The remnant polarization (Pr) and coercive field (Ec) are found to be 8.6 muC cm-2 and 60 kV cm-1, respectively. The Curie temperature Tc and piezoelectric coefficient d33 are 413 deg C and 18 pC N-1, respectively.
ISSN:0254-0584
DOI:10.1016/j.matchemphys.2008.02.032