Doping effects of strontium on the piezoelectric and dielectric properties of Ca additive Sm-modified PbTiO3 ceramics

Sheng Yuan Chu; Te Yi Chen

doi:10.1016/j.sna.2003.10.033

Doping effects of strontium on the piezoelectric and dielectric properties of Ca additive Sm-modified PbTiO₃ ceramics

Sheng Yuan Chu, Te Yi Chen

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

5 Citations (Scopus)

Abstract

Effects of Sr dopants on the piezoelectric and dielectric properties of (Ca, Sm)-modified PbTiO₃ ceramics have been investigated. The modified lead PbTiO₃ ceramics with a composition of (Pb _0.73-xCa_0.15Sr_xSm_0.08)(Ti _0.98Mn_0.02)O₃; x=0.05-0.1 were prepared by conventional mixed-oxide methods with sintering temperature at 1200°C. Microstructural and compositional analyses of these doped ceramics have been carried out using XRD and SEM. We successfully showed that Sr additive is helpful to reduce the lattice constant and obtain higher thickness electromechanical coupling coefficient, k_t (>0.55), and still keep small planar electromechanical coupling coefficient, k_p. In addition, Sr additives varied the temperature coefficient of resonant frequency (TCF) value from a positive value (+34ppm/°C) to a negative value (-47.2ppm/°C), and there exists a point with the TCF value close to zero between Sr=0.06-0.065.

Original language	English
Pages (from-to)	10-14
Number of pages	5
Journal	Sensors and Actuators, A: Physical
Volume	116
Issue number	1
DOIs	https://doi.org/10.1016/j.sna.2003.10.033
Publication status	Published - 2004 Oct 4

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering

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title = "Doping effects of strontium on the piezoelectric and dielectric properties of Ca additive Sm-modified PbTiO3 ceramics",

abstract = "Effects of Sr dopants on the piezoelectric and dielectric properties of (Ca, Sm)-modified PbTiO3 ceramics have been investigated. The modified lead PbTiO3 ceramics with a composition of (Pb 0.73-xCa0.15SrxSm0.08)(Ti 0.98Mn0.02)O3; x=0.05-0.1 were prepared by conventional mixed-oxide methods with sintering temperature at 1200°C. Microstructural and compositional analyses of these doped ceramics have been carried out using XRD and SEM. We successfully showed that Sr additive is helpful to reduce the lattice constant and obtain higher thickness electromechanical coupling coefficient, kt (>0.55), and still keep small planar electromechanical coupling coefficient, kp. In addition, Sr additives varied the temperature coefficient of resonant frequency (TCF) value from a positive value (+34ppm/°C) to a negative value (-47.2ppm/°C), and there exists a point with the TCF value close to zero between Sr=0.06-0.065.",

author = "Chu, {Sheng Yuan} and Chen, {Te Yi}",

year = "2004",

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doi = "10.1016/j.sna.2003.10.033",

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T1 - Doping effects of strontium on the piezoelectric and dielectric properties of Ca additive Sm-modified PbTiO3 ceramics

AU - Chu, Sheng Yuan

AU - Chen, Te Yi

PY - 2004/10/4

Y1 - 2004/10/4

N2 - Effects of Sr dopants on the piezoelectric and dielectric properties of (Ca, Sm)-modified PbTiO3 ceramics have been investigated. The modified lead PbTiO3 ceramics with a composition of (Pb 0.73-xCa0.15SrxSm0.08)(Ti 0.98Mn0.02)O3; x=0.05-0.1 were prepared by conventional mixed-oxide methods with sintering temperature at 1200°C. Microstructural and compositional analyses of these doped ceramics have been carried out using XRD and SEM. We successfully showed that Sr additive is helpful to reduce the lattice constant and obtain higher thickness electromechanical coupling coefficient, kt (>0.55), and still keep small planar electromechanical coupling coefficient, kp. In addition, Sr additives varied the temperature coefficient of resonant frequency (TCF) value from a positive value (+34ppm/°C) to a negative value (-47.2ppm/°C), and there exists a point with the TCF value close to zero between Sr=0.06-0.065.

AB - Effects of Sr dopants on the piezoelectric and dielectric properties of (Ca, Sm)-modified PbTiO3 ceramics have been investigated. The modified lead PbTiO3 ceramics with a composition of (Pb 0.73-xCa0.15SrxSm0.08)(Ti 0.98Mn0.02)O3; x=0.05-0.1 were prepared by conventional mixed-oxide methods with sintering temperature at 1200°C. Microstructural and compositional analyses of these doped ceramics have been carried out using XRD and SEM. We successfully showed that Sr additive is helpful to reduce the lattice constant and obtain higher thickness electromechanical coupling coefficient, kt (>0.55), and still keep small planar electromechanical coupling coefficient, kp. In addition, Sr additives varied the temperature coefficient of resonant frequency (TCF) value from a positive value (+34ppm/°C) to a negative value (-47.2ppm/°C), and there exists a point with the TCF value close to zero between Sr=0.06-0.065.

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