Temperature-insensitive piezoelectric properties of lead-free BiFeO3–BaTiO3 ceramics with high Curie temperature

Recently, high performance lead-free piezoelectric materials are strongly demanded for environmental issues. (K0.5Na0.5)NbO3 (KNN) has been attracting interest as lead-free piezoelectric ceramics because of its high Curie temperature and excellent piezoelectric properties. In this study, we investigated effects of Li addition on piezoelectric properties of (Li,Na,K)(Nb+Ta)O3+CuO,BaTiO3 . We found that optimum Li ratio of A site and B site on the perovskite structure increases relative density and .

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Enhanced piezoelectric properties of 0.7BiFeO3-0.3BaTiO3 lead-free piezoceramics with high Curie temperature by optimizing Bi self-compensation

Ceramics International ◽

10.1016/j.ceramint.2019.08.157 ◽

2019 ◽

Vol 45 (18) ◽

pp. 24382-24391 ◽

Cited By ~ 4

Author(s):

Bo-Wei Xun ◽

Ning Wang ◽

Bo-Ping Zhang ◽

Xin-Yue Chen ◽

Yue-Qi Zheng ◽

...

Keyword(s):

Curie Temperature ◽

Piezoelectric Properties ◽

Lead Free ◽

High Curie Temperature

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Microstructure, ferroelectric and piezoelectric properties of Bi0.5K0.5TiO3-modified BiFeO3–BaTiO3 lead-free ceramics with high Curie temperature

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2013.06.029 ◽

2013 ◽

Vol 33 (15-16) ◽

pp. 3023-3036 ◽

Cited By ~ 63

Author(s):

Dunmin Lin ◽

Qiaoji Zheng ◽

Ying Li ◽

Yang Wan ◽

Qiang Li ◽

...

Keyword(s):

Curie Temperature ◽

Piezoelectric Properties ◽

Lead Free ◽

High Curie Temperature ◽

Lead Free Ceramics ◽

Ferroelectric And Piezoelectric Properties

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High Curie Temperature BiFeO3-BaTiO3 Lead-free Piezoelectric Ceramics: Ga3+ Doping and Enhanced Insulation Properties

10.21203/rs.3.rs-98834/v1 ◽

2020 ◽

Author(s):

Xiao-yan Peng ◽

Yu-Cheng Tang ◽

Boping Zhang ◽

Bo-wei Xun ◽

Jing-Ru Yu

Keyword(s):

Curie Temperature ◽

Leakage Current ◽

Piezoelectric Properties ◽

Lead Free ◽

High Resistivity ◽

High Curie Temperature ◽

Low Oxygen ◽

Low Leakage ◽

Low Leakage Current ◽

Leakage Mechanism

Abstract BiFeO3-BaTiO3 (BF-BT) is a promising high temperature lead-free piezoceramics due to their excellent piezoelectric properties with high Curie temperature (TC>500 °C). While the high leakage current density severely restricted its application. In this work, the leakage mechanism relative to the dielectric properties and piezoelectric properties were systematically studied with a special emphasis on gallium (Ga3+) adding effect in 0.7BiFe(1-x)GaxO3-0.3BaTiO3 (BFGax-BT, 0≤x≤0.10) ceramics. A high resistivity (ρ) of 2.73×1012 Ω·cm-1 and low leakage current (J) of 7.78×10-9 A·cm-2 were achieved at x=0.06, which attributes to the low oxygen vacancies (B). The J-E curves reveal different type of conduction process in BFGax-BT ceramics, including Ohmic conduction, space-charge-limited conduction (SCLC) mechanism and interface-limited Schottky emission. The BFGa0.06-BT ceramic exhibits excellent piezoelectric performance: d33=174 pC·N-1, TC=497 °C, kp=29 %.

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Effects of alternating current poling on the dielectric and piezoelectric properties of Pb(In0.5Nb0.5)O3–PbTiO3 crystals with a high Curie temperature

RSC Advances ◽

10.1039/d0ra10234b ◽

2021 ◽

Vol 11 (21) ◽

pp. 12826-12832

Author(s):

Junjie Xiong ◽

Zujian Wang ◽

Xiaoming Yang ◽

Rongbing Su ◽

Xifa Long ◽

...

Keyword(s):

Curie Temperature ◽

Piezoelectric Properties ◽

Alternating Current ◽

High Curie Temperature ◽

Dielectric And Piezoelectric Properties

The ε33T/ε0 and d33 values of ACP 0.66PIN–0.34PT crystals are shown to be 3070 and 1400 pC N−1, respectively, which are 14% and 18% larger than those of a DCP sample, owing to the enhancement of both intrinsic and extrinsic contributions.

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