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Ferroelectrics Volume 559, 2020 - Issue 1
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Articles

Ferroelectric relaxor properties characterized by dynamic mechanical analysis

Y. ChenSchool of Materials Science and Engineering, Tongji University, Shanghai, ChinaView further author information
,
X. WangSchool of Materials Science and Engineering, Tongji University, Shanghai, ChinaCorrespondence[email protected]
View further author information
,
Y. LiSchool of Materials Science and Engineering, Tongji University, Shanghai, ChinaView further author information
&
X. YaoSchool of Materials Science and Engineering, Tongji University, Shanghai, ChinaView further author information
Pages 56-65 | Received 28 Aug 2019, Accepted 25 Nov 2019, Published online: 09 Jun 2020
 
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Abstract

In this article, a dynamic mechanical analyzer (DMA) was applied to investigate the mechanical properties of ferroelectric BaTiO3 and PZT ceramics. Ferroelectric to paraelectric phase transitions were clearly revealed and obvious low frequency relaxation behaviors were characterized. The activation energy of relaxation peak and relaxation limit time of BT was theoretically analyzed using the Arrhenius relationship. The relaxation mechanism of fine grain size (<1 μm) BaTiO3 and hard PZT-8 and PZT-4 ceramics was explained, while no relaxation behavior was found in larger grain size BaTiO3 and soft PZT-5H ceramics.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China (Grant No. 51572195).

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