Title

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

RIS ID

127715

Publication Details

Liu, X., Zhang, T., Zhang, S. & Cao, W. (2014). Elastic anomalies near phase transitions of lead-free (Na,Bi)TiO3 and (Ba,Zr)TiO3 ferroelectric ceramics. Chinese Science Bulletin, 59 (19), 2287-2291.

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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Link to publisher version (DOI)

http://dx.doi.org/10.1007/s11434-014-0364-9