Influence of sintering temperatures on microstructures and electrical properties of Bi₄Ti_2.95W_0.05O_12.05+0.2 wt%Cr₂O₃ ceramics

Chen, Yu, Xie, Shaoxiong, Liang, Dayun, Peng, Zhihang, Wang, Qingyuan, Zhu, Jianguo and Guan, Zhongwei ORCID: 0000-0002-6967-3508 (2015) Influence of sintering temperatures on microstructures and electrical properties of Bi₄Ti_2.95W_0.05O_12.05+0.2 wt%Cr₂O₃ ceramics. MATERIALS RESEARCH BULLETIN, 70. pp. 272-278.

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Abstract

Abstract Sintering temperatures (1050-1150°C) play an important role on influencing microstructures and electrical properties of Bi4Ti2.95W0.05O12.05 + 0.2 wt%Cr2O3 ceramics. Firstly, the lattice constants and relative density of samples varied with sintering temperatures. And the increase in sintering temperatures increased their grain size and decreased the porosity, resulting in the extreme grain growth of the sample sintered at 1150°C. Based on these structural evolutions, εr, TKε and tan δ of samples deceased with the increase in sintering temperatures, while Tc, d33 and kp increased with it. ρdc of samples also increased with the increase in sintering temperatures below 1125°C, but decreased sharply at 1150°C. The variation in 2Ec of samples with sintering temperatures may be related to the 90°domain walls. The sample sintered at 1150°C presented a lower ρdc due to the high aspect ratio, but possessed a higher d33 due to the large grain size.

Item Type:	Article
Uncontrolled Keywords:	Ceramics, Microstructure, Dielectric properties, Piezoelectricity, Ferroelectricity
Subjects:	?? TJ ??
Depositing User:	Symplectic Admin
Date Deposited:	11 Sep 2015 10:56
Last Modified:	17 Oct 2023 00:57
DOI:	10.1016/j.materresbull.2015.04.022
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/2025439