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- Title
Phase transition and domain variation contributions to piezoelectric properties of alkaline niobate based lead-free systems.
- Authors
Ruzhong Zuo; Jian Fu; Xiaohui Wang; Longtu Li
- Abstract
The intrinsic correlation and mechanism between electrical properties and phase transitions in alkaline niobate based lead-free piezoelectric ceramics were explored by taking typical (Na0.52K0.48− x)(Nb0.95− xTa0.05)O3-xLiSbO3 compositions as a case study. The diffuseness of the phase transition leads to two-phase coexistence promoting piezoelectric activity and simultaneously induces remarkable temperature sensitivity, based on the variation of orthorhombic and tetragonal domains. The polymorphism, not a morphotropism of the phase boundary was considered as a structural root for these kinds of compositions. The refinement of compositions within two-phase coexistence zone compromises two opposite effects, although the composition range is narrow, suggesting the property sensitivity to the composition and a processing solution to the property optimization as well.
- Subjects
NIOBATES; PIEZOELECTRIC ceramics; PHASE transitions; MATERIALS science; PIEZOELECTRICITY
- Publication
Journal of Materials Science: Materials in Electronics, 2010, Vol 21, Issue 5, p519
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-009-9949-5