Structure and electrical properties evolution of B-site complex ions (Li 1/4 Nb 3/4 ) modification BNT–BT ceramics
Source abstract
Abstract
B-site complex ions (Li 1/4 Nb 3/4 ) 4+ modification (Bi 1/2 Na 1/2 ) 0·94 Ba 0·06 TiO 3 ceramics with compositions of (Bi 1/2 Na 1/2 ) 0·94 Ba 0·06 Ti 1−x (Li 1/4 Nb 3/4 ) x O 3 ( x = 0, 0·01, 0·03 and 0·06) have been synthesised via the conventional solid state reaction. The effect of (Li 1/4 Nb 3/4 ) 4+ content and sintering temperature on structures and electrical properties were investigated. It was found that both compositions and sintering temperatures have no significant effect on the crystal structure, and trace (Li 1/4 Nb 3/4 ) 4+ addition and sintering temperatures have a great influence on the microstructure. Two obvious dielectric anomaly peaks ( T d and T m ) were observed and dielectric constant for all poled specimens displayed significant frequency dispersion at T d and diffusion phase transition at T m . The piezoelectric properties of the ceramics are insensitive to the sintering temperatures, and the composition with x = 0·03 sintering at 1150°C exhibits favourable piezoelectric properties of d 33 = 155 pC N −1 and k p = 0·312.
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Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering Guangxi University, Nanning 530004, China
School of Material Science and Engineering Guilin University of Electronic Technology, Guilin 541004, China
References (27)
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