Piezoelectric properties and thermal stability of (Na0.53K0.47-xAgx)Nb1-xSbxO3 ceramics
作者： Limei Zheng , Jinfeng Wang , Qingzao Wu , Rui Zhang , Chunming Wang
关键词:
摘要: Many (K1−xNax)NbO3 (KNN)-based ceramics with high piezoelectric performance exhibit undesirable strong temperature dependence due to the orthorhombic–tetragonal polymorphic phase transition near room temperature. In order improve stability of ceramics, many additives have been added into KNN-based shift TO–T down below Contrary previous approach (Na0.53K0.47−xAgx)Nb1−xSbxO3 (NKANS) well above prepared by a conventional solid-state reaction method. The density and electrical properties are effectively improved addition AgSbO3, optimum found in 0.05 ≤ x ≤ 0.07, maximum kp ∼ 0.46 for NKANS5 d33 ∼ 199 pC/N NKANS7. More importantly, kp remains virtually almost unchanged up (≥100 °C), indicating that NKANS much thermal stability. analyses suggest both value diffuse should be responsible good
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