Electrical properties of (K0.5Na0.5)1-xAgxNbO3lead-free piezoelectric ceramics

Chenggang Xu; Dunmin Lin; Kin Wing Kwok

doi:10.1007/s10854-007-9458-3

Electrical properties of (K_0.5Na_0.5)_1-xAg_xNbO₃lead-free piezoelectric ceramics

Chenggang Xu, Dunmin Lin, Kin Wing Kwok

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

13 Citations (Scopus)

Abstract

(K0.5Na0.5)1-xAgxNbO3lead-free piezoelectric ceramics have been fabricated by an ordinary ceramic technique. The results of XRD reveal that Ag+diffuses into the K0.5Na0.5NbO3lattices to form a new solid solution with an orthorhombic perovskite structure and the solubility of Ag+into A-sites of K0.5Na0.5NbO3is about 0.20. The ceramics can be well-sintered at 1,100-1,110 °C. The partial substitution of Ag+for A-site ion (K0.5Na0.5)+decreases slightly both paraelectric cubic-ferroelectric tetragonal (TC) and ferroelectric tetragonal-ferroelectric orthorhombic phase transition temperatures (TO-T). The ferroelectricity of the ceramics becomes weak at high Ag+concentration. The ceramic with x = 0.10 possesses optimum electrical properties: d33= 135pC/N, kP= 0.43, kt= 0.46, εr= 470, tanδ = 3.39%, and TC= 394°C.

Original language	English
Pages (from-to)	1054-1057
Number of pages	4
Journal	Journal of Materials Science: Materials in Electronics
Volume	19
Issue number	11
DOIs	https://doi.org/10.1007/s10854-007-9458-3
Publication status	Published - 1 Jan 2008

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/s10854-007-9458-3

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title = "Electrical properties of (K0.5Na0.5)1-xAgxNbO3lead-free piezoelectric ceramics",

abstract = "(K0.5Na0.5)1-xAgxNbO3lead-free piezoelectric ceramics have been fabricated by an ordinary ceramic technique. The results of XRD reveal that Ag+diffuses into the K0.5Na0.5NbO3lattices to form a new solid solution with an orthorhombic perovskite structure and the solubility of Ag+into A-sites of K0.5Na0.5NbO3is about 0.20. The ceramics can be well-sintered at 1,100-1,110 °C. The partial substitution of Ag+for A-site ion (K0.5Na0.5)+decreases slightly both paraelectric cubic-ferroelectric tetragonal (TC) and ferroelectric tetragonal-ferroelectric orthorhombic phase transition temperatures (TO-T). The ferroelectricity of the ceramics becomes weak at high Ag+concentration. The ceramic with x = 0.10 possesses optimum electrical properties: d33= 135pC/N, kP= 0.43, kt= 0.46, εr= 470, tanδ = 3.39%, and TC= 394°C.",

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T1 - Electrical properties of (K0.5Na0.5)1-xAgxNbO3lead-free piezoelectric ceramics

AU - Xu, Chenggang

AU - Lin, Dunmin

AU - Kwok, Kin Wing

PY - 2008/1/1

Y1 - 2008/1/1

N2 - (K0.5Na0.5)1-xAgxNbO3lead-free piezoelectric ceramics have been fabricated by an ordinary ceramic technique. The results of XRD reveal that Ag+diffuses into the K0.5Na0.5NbO3lattices to form a new solid solution with an orthorhombic perovskite structure and the solubility of Ag+into A-sites of K0.5Na0.5NbO3is about 0.20. The ceramics can be well-sintered at 1,100-1,110 °C. The partial substitution of Ag+for A-site ion (K0.5Na0.5)+decreases slightly both paraelectric cubic-ferroelectric tetragonal (TC) and ferroelectric tetragonal-ferroelectric orthorhombic phase transition temperatures (TO-T). The ferroelectricity of the ceramics becomes weak at high Ag+concentration. The ceramic with x = 0.10 possesses optimum electrical properties: d33= 135pC/N, kP= 0.43, kt= 0.46, εr= 470, tanδ = 3.39%, and TC= 394°C.

AB - (K0.5Na0.5)1-xAgxNbO3lead-free piezoelectric ceramics have been fabricated by an ordinary ceramic technique. The results of XRD reveal that Ag+diffuses into the K0.5Na0.5NbO3lattices to form a new solid solution with an orthorhombic perovskite structure and the solubility of Ag+into A-sites of K0.5Na0.5NbO3is about 0.20. The ceramics can be well-sintered at 1,100-1,110 °C. The partial substitution of Ag+for A-site ion (K0.5Na0.5)+decreases slightly both paraelectric cubic-ferroelectric tetragonal (TC) and ferroelectric tetragonal-ferroelectric orthorhombic phase transition temperatures (TO-T). The ferroelectricity of the ceramics becomes weak at high Ag+concentration. The ceramic with x = 0.10 possesses optimum electrical properties: d33= 135pC/N, kP= 0.43, kt= 0.46, εr= 470, tanδ = 3.39%, and TC= 394°C.

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DO - 10.1007/s10854-007-9458-3

M3 - Journal article

SN - 0957-4522

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SP - 1054

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JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

IS - 11

ER -

Electrical properties of (K_0.5Na_0.5)_1-xAg_xNbO₃lead-free piezoelectric ceramics

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