Structure and piezoelectric properties of new ternary K0.5Na0.5NbO3-LiSbO3-CaTiO3lead-free piezoceramics

Qiaoji Zheng; Dunmin Lin; Xiaochun Wu; Chenggang Xu; Chun Yang; Kin Wing Kwok

doi:10.1007/s10854-009-9967-3

Structure and piezoelectric properties of new ternary K_0.5Na_0.5NbO₃-LiSbO₃-CaTiO₃lead-free piezoceramics

Qiaoji Zheng, Dunmin Lin, Xiaochun Wu, Chenggang Xu, Chun Yang, Kin Wing Kwok

Research output: Journal article publication › Journal article › Academic research › peer-review

6 Citations (Scopus)

Abstract

New ternary (1-x)K0.5Na0.5NbO3-x(0.80LiS- bO3-0.20CaTiO3) lead-free ceramics were fabricated by a conventional ceramic technique and their structure and piezoelectric properties were studied. The results of X-ray diffraction reveal that LiSbO3and CaTiO3diffuse into the K0.5Na0.5NbO3lattices to form a new solid solution with a perovskite structure. After the addition of LiSbO3and CaTiO3, the cubic-tetragonal and tetragonal-orthorhombic phase transitions shift to lower temperatures. Coexistence of the orthorhombic and tetragonal phases is hence formed in the ceramics with 0.03 < × < 0.07 at room temperature, leading to a significant enhancement of the piezoelectric properties. For the ceramics with × = 0.04-0.06, the piezoelectric properties become optimum: d33= 172-253 pC/N, kP= 49.9-55.5%, kt= 49.2-52.1% and TC= 348-373 °C. The ceramic with × = 0.04 also exhibits a good thermal stability of piezoelectric properties.

Original language	English
Pages (from-to)	625-629
Number of pages	5
Journal	Journal of Materials Science: Materials in Electronics
Volume	21
Issue number	6
DOIs	https://doi.org/10.1007/s10854-009-9967-3
Publication status	Published - 1 Jun 2010

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1007/s10854-009-9967-3

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title = "Structure and piezoelectric properties of new ternary K0.5Na0.5NbO3-LiSbO3-CaTiO3lead-free piezoceramics",

abstract = "New ternary (1-x)K0.5Na0.5NbO3-x(0.80LiS- bO3-0.20CaTiO3) lead-free ceramics were fabricated by a conventional ceramic technique and their structure and piezoelectric properties were studied. The results of X-ray diffraction reveal that LiSbO3and CaTiO3diffuse into the K0.5Na0.5NbO3lattices to form a new solid solution with a perovskite structure. After the addition of LiSbO3and CaTiO3, the cubic-tetragonal and tetragonal-orthorhombic phase transitions shift to lower temperatures. Coexistence of the orthorhombic and tetragonal phases is hence formed in the ceramics with 0.03 < × < 0.07 at room temperature, leading to a significant enhancement of the piezoelectric properties. For the ceramics with × = 0.04-0.06, the piezoelectric properties become optimum: d33= 172-253 pC/N, kP= 49.9-55.5%, kt= 49.2-52.1% and TC= 348-373 °C. The ceramic with × = 0.04 also exhibits a good thermal stability of piezoelectric properties.",

author = "Qiaoji Zheng and Dunmin Lin and Xiaochun Wu and Chenggang Xu and Chun Yang and Kwok, {Kin Wing}",

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T1 - Structure and piezoelectric properties of new ternary K0.5Na0.5NbO3-LiSbO3-CaTiO3lead-free piezoceramics

AU - Zheng, Qiaoji

AU - Lin, Dunmin

AU - Wu, Xiaochun

AU - Xu, Chenggang

AU - Yang, Chun

AU - Kwok, Kin Wing

PY - 2010/6/1

Y1 - 2010/6/1

N2 - New ternary (1-x)K0.5Na0.5NbO3-x(0.80LiS- bO3-0.20CaTiO3) lead-free ceramics were fabricated by a conventional ceramic technique and their structure and piezoelectric properties were studied. The results of X-ray diffraction reveal that LiSbO3and CaTiO3diffuse into the K0.5Na0.5NbO3lattices to form a new solid solution with a perovskite structure. After the addition of LiSbO3and CaTiO3, the cubic-tetragonal and tetragonal-orthorhombic phase transitions shift to lower temperatures. Coexistence of the orthorhombic and tetragonal phases is hence formed in the ceramics with 0.03 < × < 0.07 at room temperature, leading to a significant enhancement of the piezoelectric properties. For the ceramics with × = 0.04-0.06, the piezoelectric properties become optimum: d33= 172-253 pC/N, kP= 49.9-55.5%, kt= 49.2-52.1% and TC= 348-373 °C. The ceramic with × = 0.04 also exhibits a good thermal stability of piezoelectric properties.

AB - New ternary (1-x)K0.5Na0.5NbO3-x(0.80LiS- bO3-0.20CaTiO3) lead-free ceramics were fabricated by a conventional ceramic technique and their structure and piezoelectric properties were studied. The results of X-ray diffraction reveal that LiSbO3and CaTiO3diffuse into the K0.5Na0.5NbO3lattices to form a new solid solution with a perovskite structure. After the addition of LiSbO3and CaTiO3, the cubic-tetragonal and tetragonal-orthorhombic phase transitions shift to lower temperatures. Coexistence of the orthorhombic and tetragonal phases is hence formed in the ceramics with 0.03 < × < 0.07 at room temperature, leading to a significant enhancement of the piezoelectric properties. For the ceramics with × = 0.04-0.06, the piezoelectric properties become optimum: d33= 172-253 pC/N, kP= 49.9-55.5%, kt= 49.2-52.1% and TC= 348-373 °C. The ceramic with × = 0.04 also exhibits a good thermal stability of piezoelectric properties.

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Structure and piezoelectric properties of new ternary K_0.5Na_0.5NbO₃-LiSbO₃-CaTiO₃lead-free piezoceramics

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