Incipient ferroelectric properties of NaTaO.sub.3./sub

0377895 - FZÚ 2013 RIV GB eng J - Článek v odborném periodiku
Kamba, Stanislav - Goian, Veronica - Bovtun, Viktor - Nuzhnyy, Dmitry - Kempa, Martin - Spreitzer, M. - König, J. - Suvorov, D.
Incipient ferroelectric properties of NaTaO₃
Ferroelectrics. Roč. 426, SI (2012), s. 206-214. ISSN 0015-0193. E-ISSN 1563-5112
Grant CEP: GA ČR(CZ) GA202/09/0682
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: incipient ferroelectricity * infrared and THz spectroscopy * phonons * microwave ceramics
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 0.415, rok: 2012

Microwave dielectric permittivity of NaTaO3 ceramics exhibits increase on cooling and saturation at low temperatures, which is typical for incipient ferroelectrics. The tem perature dependence of permittivity was successfully fit with the Barrett formula and explained by polar phonon softening detected in infrared reflectivity and THz transmision spectra.
Trvalý link: http://hdl.handle.net/11104/0209922