Elastic anomalies near phase transitions of lead-free (Na,Bi)TiO3 and (Ba,Zr)TiO3 ferroelectric ceramics

Xiaozhou Liu, Tingting Zhang, Shujun Zhang, Wenwu Cao

Research output: Contribution to journalArticle

Abstract

We have investigated the temperature dependence of elastic modulus for various ferroelectric ceramics in the temperature range of 20-90 °C. The Na0.5Bi0.5TiO3 (NBT) ceramics has a phase transition at 200 °C, thus exhibits minimal change in elastic modulus up to 90 °C, while the elastic modulus of the BaZr0.07Ti0.93O3 (BZT-7) shows 12.5 % change at the phase transition temperature of 70 °C and that of the BaZr0.15Ti0.85O3 (BZT-15) ceramics shows 34.6 % change at the phase transition temperature of 60 °C. The variations of elastic modulus will affect the temperature stability of devices made by these lead-free ferroelectric ceramics.

Original languageEnglish (US)
Pages (from-to)2287-2291
Number of pages5
JournalChinese Science Bulletin
Volume59
Issue number19
DOIs
StatePublished - Jan 1 2014

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modulus of elasticity
ceramics
anomalies
transition temperature
temperature dependence
temperature

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Liu, Xiaozhou ; Zhang, Tingting ; Zhang, Shujun ; Cao, Wenwu. / Elastic anomalies near phase transitions of lead-free (Na,Bi)TiO3 and (Ba,Zr)TiO3 ferroelectric ceramics. In: Chinese Science Bulletin. 2014 ; Vol. 59, No. 19. pp. 2287-2291.
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abstract = "We have investigated the temperature dependence of elastic modulus for various ferroelectric ceramics in the temperature range of 20-90 °C. The Na0.5Bi0.5TiO3 (NBT) ceramics has a phase transition at 200 °C, thus exhibits minimal change in elastic modulus up to 90 °C, while the elastic modulus of the BaZr0.07Ti0.93O3 (BZT-7) shows 12.5 {\%} change at the phase transition temperature of 70 °C and that of the BaZr0.15Ti0.85O3 (BZT-15) ceramics shows 34.6 {\%} change at the phase transition temperature of 60 °C. The variations of elastic modulus will affect the temperature stability of devices made by these lead-free ferroelectric ceramics.",
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Elastic anomalies near phase transitions of lead-free (Na,Bi)TiO3 and (Ba,Zr)TiO3 ferroelectric ceramics. / Liu, Xiaozhou; Zhang, Tingting; Zhang, Shujun; Cao, Wenwu.

In: Chinese Science Bulletin, Vol. 59, No. 19, 01.01.2014, p. 2287-2291.

Research output: Contribution to journalArticle

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AB - We have investigated the temperature dependence of elastic modulus for various ferroelectric ceramics in the temperature range of 20-90 °C. The Na0.5Bi0.5TiO3 (NBT) ceramics has a phase transition at 200 °C, thus exhibits minimal change in elastic modulus up to 90 °C, while the elastic modulus of the BaZr0.07Ti0.93O3 (BZT-7) shows 12.5 % change at the phase transition temperature of 70 °C and that of the BaZr0.15Ti0.85O3 (BZT-15) ceramics shows 34.6 % change at the phase transition temperature of 60 °C. The variations of elastic modulus will affect the temperature stability of devices made by these lead-free ferroelectric ceramics.

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