Domain size engineering in 0.5%MnO2-(K0.5Na0.5)NbO3 lead free piezoelectric crystals

Dabin Lin; Shujun Zhang; Changlong Cai; Weiguo Liu

doi:10.1063/1.4913208

Domain size engineering in 0.5%MnO₂-(K_0.5Na_0.5)NbO₃ lead free piezoelectric crystals

Dabin Lin, Shujun Zhang, Changlong Cai, Weiguo Liu

Materials Research Institute (MRI)

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

The piezoelectric property of [001]-oriented 0.5%MnO₂-(K_0.5Na_0.5)NbO₃ (Mn-KNN) crystals was studied as a function of domain size, being poled with different electric fields at 205 °C (above orthorhombic to tetragonal phase transition temperature T_o-t). The piezoelectric coefficients d₃₃ and relative dielectric constants ε_r were found to increase from 270 pC/N to 350 pC/N and 730 to 850 with the domain size decreasing from 9 to 2 μm, respectively. The thermal stability of piezoelectric property was investigated, where the d₃₃ value for [001]-oriented Mn-KNN crystals with domain size of 2 μm was found to decrease to 330 pC/N at depoling temperature of 150 °C, with minimal variation of ∼6%. The results reveal that domain size engineering is an effective way to improve the piezoelectric properties of Mn-KNN crystals.

Original language	English (US)
Article number	074103
Journal	Journal of Applied Physics
Volume	117
Issue number	7
DOIs	https://doi.org/10.1063/1.4913208
State	Published - Feb 21 2015

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1063/1.4913208

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title = "Domain size engineering in 0.5%MnO2-(K0.5Na0.5)NbO3 lead free piezoelectric crystals",

abstract = "The piezoelectric property of [001]-oriented 0.5%MnO2-(K0.5Na0.5)NbO3 (Mn-KNN) crystals was studied as a function of domain size, being poled with different electric fields at 205 °C (above orthorhombic to tetragonal phase transition temperature To-t). The piezoelectric coefficients d33 and relative dielectric constants εr were found to increase from 270 pC/N to 350 pC/N and 730 to 850 with the domain size decreasing from 9 to 2 μm, respectively. The thermal stability of piezoelectric property was investigated, where the d33 value for [001]-oriented Mn-KNN crystals with domain size of 2 μm was found to decrease to 330 pC/N at depoling temperature of 150 °C, with minimal variation of ∼6%. The results reveal that domain size engineering is an effective way to improve the piezoelectric properties of Mn-KNN crystals.",

author = "Dabin Lin and Shujun Zhang and Changlong Cai and Weiguo Liu",

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T1 - Domain size engineering in 0.5%MnO2-(K0.5Na0.5)NbO3 lead free piezoelectric crystals

AU - Lin, Dabin

AU - Zhang, Shujun

AU - Cai, Changlong

AU - Liu, Weiguo

PY - 2015/2/21

Y1 - 2015/2/21

N2 - The piezoelectric property of [001]-oriented 0.5%MnO2-(K0.5Na0.5)NbO3 (Mn-KNN) crystals was studied as a function of domain size, being poled with different electric fields at 205 °C (above orthorhombic to tetragonal phase transition temperature To-t). The piezoelectric coefficients d33 and relative dielectric constants εr were found to increase from 270 pC/N to 350 pC/N and 730 to 850 with the domain size decreasing from 9 to 2 μm, respectively. The thermal stability of piezoelectric property was investigated, where the d33 value for [001]-oriented Mn-KNN crystals with domain size of 2 μm was found to decrease to 330 pC/N at depoling temperature of 150 °C, with minimal variation of ∼6%. The results reveal that domain size engineering is an effective way to improve the piezoelectric properties of Mn-KNN crystals.

AB - The piezoelectric property of [001]-oriented 0.5%MnO2-(K0.5Na0.5)NbO3 (Mn-KNN) crystals was studied as a function of domain size, being poled with different electric fields at 205 °C (above orthorhombic to tetragonal phase transition temperature To-t). The piezoelectric coefficients d33 and relative dielectric constants εr were found to increase from 270 pC/N to 350 pC/N and 730 to 850 with the domain size decreasing from 9 to 2 μm, respectively. The thermal stability of piezoelectric property was investigated, where the d33 value for [001]-oriented Mn-KNN crystals with domain size of 2 μm was found to decrease to 330 pC/N at depoling temperature of 150 °C, with minimal variation of ∼6%. The results reveal that domain size engineering is an effective way to improve the piezoelectric properties of Mn-KNN crystals.

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Domain size engineering in 0.5%MnO₂-(K_0.5Na_0.5)NbO₃ lead free piezoelectric crystals

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