TY - JOUR
T1 - On the coexistence of ferroelectric and antiferroelectric polymorphs in NaNbO3 fibers at room temperature
AU - Teixeira, Guilhermina Ferreira
AU - Seleghini, Heitor Secco
AU - Bastos, Wagner Benicio
AU - Jacomaci, Natalia
AU - Stojadinovic, Bojan
AU - Dohcevic-Mitrovic, Zorana
AU - Colmati, Flavio
AU - San-Miguel, Miguel Angel
AU - Longo, Elson
AU - Zaghete, Maria Aparecida
N1 - Funding: The authors would like to thank the Brazilian research agencies CAPES (Processes number: 88881.068060/2014-01 and 88882.306480/2018-1), FAPESP-(CEPID/CDMF 2013/07296-2, 2016/23891-6, 2017/26105-4, and 2017/10819-8) for the financial support to this research. HSS would like to thank the Brazilian National Council for Scientific and Technological Development (CNPq) for the scholarship 130518/2019-0. Z. D. M. and B. S. would like to thank the Institute of Physics Belgrade for the funding granted by the Ministry of Education, Science, and Technological Development of the Republic of Serbia.
PY - 2023/4/28
Y1 - 2023/4/28
N2 - Na2Nb2O6·H2O fibers were synthesized in a short time using a microwave-assisted hydrothermal method and later used as a precursor for obtaining NaNbO3 fibers with piezoelectric characteristics. The NaNbO3 fibers consist of a mix of antiferroelectric (Pbcm) and ferroelectric (P21ma) 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.
AB - Na2Nb2O6·H2O fibers were synthesized in a short time using a microwave-assisted hydrothermal method and later used as a precursor for obtaining NaNbO3 fibers with piezoelectric characteristics. The NaNbO3 fibers consist of a mix of antiferroelectric (Pbcm) and ferroelectric (P21ma) 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.
UR - https://www.scopus.com/pages/publications/85153253388
U2 - 10.1039/d2tc04039e
DO - 10.1039/d2tc04039e
M3 - Article
SN - 2050-7526
VL - 11
SP - 5524
EP - 5533
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 16
ER -