Thermal and electromechanical properties of melilite-type piezoelectric single crystals

Chuanying Shen; Shujun Zhang; Wenwu Cao; Hengjiang Cong; Haohai Yu; Jiyang Wang; Huaijin Zhang

doi:10.1063/1.4908113

Thermal and electromechanical properties of melilite-type piezoelectric single crystals

Chuanying Shen
, Shujun Zhang
, Wenwu Cao
, Hengjiang Cong
, Haohai Yu
, Jiyang Wang
, Huaijin Zhang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

30 Citations (Scopus)

Abstract

Melilite-type crystals, including Ca₂Ga₂SiO₇, Ca₂MgSi₂O₇, and CaNdGa₃O₇, were successfully grown by the Czochralski technique. Thermal properties were investigated and full matrices of electromechanical constants of these melilite crystals were evaluated by impedance method, with d₁₄ being on the order of 5.3-9.3 pC/N. The relationship between microstructure and electromechanical properties of the three kinds of crystals was established, in order to explore the piezoelectric origin and further optimize the piezoelectric properties. The distortion of eight-fold antiprisms and the distortion/rotation of tetrahedrons were thought to contribute to the piezoelectric d₁₄ and d₃₆, respectively. In addition, the layered structure leads to strong anisotropic behavior, accounts for the high resistivity along Z direction in Ca₂MgSi₂O₇, while the disordered structure accounts for the degraded resistivity in CaNdGa₃O₇. The properties at elevated temperature were investigated, where the elastic constants show high thermal stability over the range of 25-500 °C, with minimal variation of 6%. © 2015 AIP Publishing LLC.

Original language	English
Article number	064106
Journal	Journal of Applied Physics
Volume	117
Issue number	6
DOIs	https://doi.org/10.1063/1.4908113
Publication status	Published - 14 Feb 2015
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

The authors from Shandong University acknowledged the National Natural Science Foundation of China (Grant No. 51372189).

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title = "Thermal and electromechanical properties of melilite-type piezoelectric single crystals",

abstract = "Melilite-type crystals, including Ca2Ga2SiO7, Ca2MgSi2O7, and CaNdGa3O7, were successfully grown by the Czochralski technique. Thermal properties were investigated and full matrices of electromechanical constants of these melilite crystals were evaluated by impedance method, with d14 being on the order of 5.3-9.3 pC/N. The relationship between microstructure and electromechanical properties of the three kinds of crystals was established, in order to explore the piezoelectric origin and further optimize the piezoelectric properties. The distortion of eight-fold antiprisms and the distortion/rotation of tetrahedrons were thought to contribute to the piezoelectric d14 and d36, respectively. In addition, the layered structure leads to strong anisotropic behavior, accounts for the high resistivity along Z direction in Ca2MgSi2O7, while the disordered structure accounts for the degraded resistivity in CaNdGa3O7. The properties at elevated temperature were investigated, where the elastic constants show high thermal stability over the range of 25-500 °C, with minimal variation of 6\%. {\textcopyright} 2015 AIP Publishing LLC.",

author = "Chuanying Shen and Shujun Zhang and Wenwu Cao and Hengjiang Cong and Haohai Yu and Jiyang Wang and Huaijin Zhang",

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T1 - Thermal and electromechanical properties of melilite-type piezoelectric single crystals

AU - Shen, Chuanying

AU - Zhang, Shujun

AU - Cao, Wenwu

AU - Cong, Hengjiang

AU - Yu, Haohai

AU - Wang, Jiyang

AU - Zhang, Huaijin

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2015/2/14

Y1 - 2015/2/14

N2 - Melilite-type crystals, including Ca2Ga2SiO7, Ca2MgSi2O7, and CaNdGa3O7, were successfully grown by the Czochralski technique. Thermal properties were investigated and full matrices of electromechanical constants of these melilite crystals were evaluated by impedance method, with d14 being on the order of 5.3-9.3 pC/N. The relationship between microstructure and electromechanical properties of the three kinds of crystals was established, in order to explore the piezoelectric origin and further optimize the piezoelectric properties. The distortion of eight-fold antiprisms and the distortion/rotation of tetrahedrons were thought to contribute to the piezoelectric d14 and d36, respectively. In addition, the layered structure leads to strong anisotropic behavior, accounts for the high resistivity along Z direction in Ca2MgSi2O7, while the disordered structure accounts for the degraded resistivity in CaNdGa3O7. The properties at elevated temperature were investigated, where the elastic constants show high thermal stability over the range of 25-500 °C, with minimal variation of 6%. © 2015 AIP Publishing LLC.

AB - Melilite-type crystals, including Ca2Ga2SiO7, Ca2MgSi2O7, and CaNdGa3O7, were successfully grown by the Czochralski technique. Thermal properties were investigated and full matrices of electromechanical constants of these melilite crystals were evaluated by impedance method, with d14 being on the order of 5.3-9.3 pC/N. The relationship between microstructure and electromechanical properties of the three kinds of crystals was established, in order to explore the piezoelectric origin and further optimize the piezoelectric properties. The distortion of eight-fold antiprisms and the distortion/rotation of tetrahedrons were thought to contribute to the piezoelectric d14 and d36, respectively. In addition, the layered structure leads to strong anisotropic behavior, accounts for the high resistivity along Z direction in Ca2MgSi2O7, while the disordered structure accounts for the degraded resistivity in CaNdGa3O7. The properties at elevated temperature were investigated, where the elastic constants show high thermal stability over the range of 25-500 °C, with minimal variation of 6%. © 2015 AIP Publishing LLC.

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U2 - 10.1063/1.4908113

DO - 10.1063/1.4908113

M3 - RGC 21 - Publication in refereed journal

SN - 0021-8979

VL - 117

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 6

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ER -

Thermal and electromechanical properties of melilite-type piezoelectric single crystals

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