On the coexistence of ferroelectric and antiferroelectric polymorphs in NaNbO 3 fibers at room temperature

Na 2 Nb 2 O 6 ·H 2 O fibers were synthesized in a short time using a microwave-assisted hydrothermal method and later used as a precursor for obtaining NaNbO 3 fibers with piezoelectric characteristics. The NaNbO 3 fibers consist of a mix of antiferroelectric ( Pbcm ) and ferroelectric ( P 2 1 ma )...

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Published inJournal of materials chemistry. C, Materials for optical and electronic devices Vol. 11; no. 16; pp. 5524 - 5533
Main Authors Teixeira, Guilhermina Ferreira, Seleghini, Heitor Secco, Bastos, Wagner Benício, Jacomaci, Natalia, Stojadinović, Bojan, Dohčević-Mitrović, Zorana, Colmati, Flavio, San-Miguel, Miguel Angel, Longo, Elson, Zaghete, Maria Aparecida
Format Journal Article
LanguageEnglish
Published 27.04.2023
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Summary:Na 2 Nb 2 O 6 ·H 2 O fibers were synthesized in a short time using a microwave-assisted hydrothermal method and later used as a precursor for obtaining NaNbO 3 fibers with piezoelectric characteristics. The NaNbO 3 fibers consist of a mix of antiferroelectric ( Pbcm ) and ferroelectric ( P 2 1 ma ) orthorhombic phases. The ferroelectric structure comprises about 87% wt of the sample, and a theoretical approach indicated that an electric field could induce an inversion in the relative stability between the most stable antiferroelectric structure and the ferroelectric one. Piezoresponse force microscopy showed that an individual fiber is composed of regions with ferroelectric domains and regions with no ferroelectric characteristics.
ISSN:2050-7526
2050-7534
DOI:10.1039/D2TC04039E