Correlation between cubic-based polymorphic phase boundary structures and the piezoelectric properties of 0.96(Na0.5K0.5)(Nb1-xSbx)-0.04BaTiO3 ceramics
Source abstract
Abstract
CuO-added 0.96(Na0.5K0.5)(Nb1-xSbx)-0.04BaTiO3 ceramics with 0.0 ≤ x ≤ 0.1 were sintered at 980°C for 6 hours and the effects of antimony on the successive phase transition and the corresponding piezoelectric properties were carefully studied. It was found that with the increasing of x values, the crystal structures varied from orthorhombic-tetragonal polymorphic phase boundary (PPB), orthorhombic-tetragonal-cubic PPB, and finally to the tetragonal-cubic PPB structure. Accordingly, the piezoelectric properties of the specimens were influenced by the varied crystal structures. In particular, the specimen with a tetragonal (88.01%)-cubic (11.99%) PPB structure (x = 0.06) showed a large d33 of 302 pC/N and a high strain of 0.17% at 4.5kV/mm, revealing its promising potential as the Pb-free piezoelectric actuators.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Acoustic Wave Resonator Technologies · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical & Automotive Engineering, Qingdao University of Technology, Qingdao, Shandong, China
School of Science, Beijing University of Posts and Telecommunications, Beijing, China
Funding
National Natural Science Foundation of China · Key Research and Development Program of Shandong Province of China · Introduction of High-Level Talent Program of Qingdao University of Technology
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