Ferroelectricity in antiferroelectric NaNbO3 crystal
Language English Country England, Great Britain Media print-electronic
Document type Journal Article
- MeSH
- Crystallization methods MeSH
- Magnetic Fields * MeSH
- Molecular Conformation MeSH
- Niobium chemistry MeSH
- Sodium chemistry MeSH
- Materials Testing MeSH
- Phase Transition MeSH
- Publication type
- Journal Article MeSH
- Names of Substances
- Niobium MeSH
- Sodium MeSH
- sodium niobate MeSH Browser
Sodium niobate (NaNbO3, or NNO) is known to be antiferroelectric at temperatures between 45 and 753 K. Here we show experimentally the presence of the ferroelectric phase at temperatures between 100 and 830 K in the NNO crystals obtained by top-seeded solution growth. The ferroelectric phase and new phase transitions are evidenced using a combination of thermo-optical studies by variable angle spectroscopic ellipsometry, Raman spectroscopy analysis, and photoelectron emission microscopy. The possibility for strain-induced ferroelectricity in NNO is suggested.
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