Fabrication of modified lead titanate piezoceramics with zero temperature coefficient and its application on SAW devices

Sheng-Yuan Chu; Te Yi Chen

doi:10.1109/TUFFC.2004.1304264

Fabrication of modified lead titanate piezoceramics with zero temperature coefficient and its application on SAW devices

Sheng-Yuan Chu, Te Yi Chen

Research output: Contribution to journal › Article

15 Citations (Scopus)

Abstract

The Samarium-modified, lead titanate ceramics with a composition of (Pb_0.67Ca_0.15Sr_0.06Sm_0.08) (Ti _0.98Mn_0.02)O₃ were prepared by conventional mixed-oxide method. By properly varying the sintering and poling conditions, the samples with zero temperature coefficient of resonant frequency were fabricated. The piezoelectric and dielectric properties were measured; it showed that the samples with zero temperature coefficient still keep high-thickness, electromechanical coupling coefficient, k_t(>0.55), and small planar electromechanical coupling coefficient, k_p. Surface acoustic wave (SAW) filters were fabricated; and the properties, including phase velocity and electromechanical coupling coefficient, were measured. Microstructural and compositional analyses have been carried out using scanning electron microscopy and x-ray diffraction.

Original language	English
Pages (from-to)	663-667
Number of pages	5
Journal	IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume	51
Issue number	6
DOIs	https://doi.org/10.1109/TUFFC.2004.1304264
Publication status	Published - 2004 Jun 1

All Science Journal Classification (ASJC) codes

Instrumentation
Acoustics and Ultrasonics
Electrical and Electronic Engineering

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title = "Fabrication of modified lead titanate piezoceramics with zero temperature coefficient and its application on SAW devices",

abstract = "The Samarium-modified, lead titanate ceramics with a composition of (Pb0.67Ca0.15Sr0.06Sm0.08) (Ti 0.98Mn0.02)O3 were prepared by conventional mixed-oxide method. By properly varying the sintering and poling conditions, the samples with zero temperature coefficient of resonant frequency were fabricated. The piezoelectric and dielectric properties were measured; it showed that the samples with zero temperature coefficient still keep high-thickness, electromechanical coupling coefficient, kt(>0.55), and small planar electromechanical coupling coefficient, kp. Surface acoustic wave (SAW) filters were fabricated; and the properties, including phase velocity and electromechanical coupling coefficient, were measured. Microstructural and compositional analyses have been carried out using scanning electron microscopy and x-ray diffraction.",

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