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The influence of the Ti/Ba ratio on the formation of pyroelectric and piezoelectric quasi-amorphous films of BaTiO3

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Abstract

The influence of the Ti/Ba ratio on the formation of pyroelectric and piezoelectric quasi-amorphous BaTiO3 films was investigated. Three types of films, Ti-rich, Ba-rich, and stoichiometric, were pulled through a temperature gradient or subjected to isothermal heating. The quasi-amorphous polar phase only formed in films pulled through the temperature gradient with Ti/Ba ratio within the broad range of 0.95–1.1. This implies that quasi-amorphous pyroelectric and piezoelectric thin films are significantly more tolerant of a deviation from stoichiometry than their crystalline counterparts.

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Acknowledgments

The authors wish to acknowledge the Minerva Foundation and the Israel Science Foundation for funding this research.

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Authors and Affiliations

  1. Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 76200, Israel

    David Ehre, Vera Lyahovitskaya & Igor Lubomirsky

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  1. David Ehre
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  2. Vera Lyahovitskaya
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  3. Igor Lubomirsky
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Correspondence to Igor Lubomirsky.

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Ehre, D., Lyahovitskaya, V. & Lubomirsky, I. The influence of the Ti/Ba ratio on the formation of pyroelectric and piezoelectric quasi-amorphous films of BaTiO3. Journal of Materials Research 22, 2742–2746 (2007). https://doi.org/10.1557/JMR.2007.0342

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