Broadband dielectric, terahertz, and infrared spectroscopy of BaTiO.sub.3./sub.-BaZrO.sub.3./sub. solid solution: from proper ferroelectric over diffuse and relaxor ferroelectrics and dipolar glass to normal dielectric

0552556 - FZÚ 2022 RIV DE eng J - Článek v odborném periodiku
Petzelt, Jan - Bovtun, Viktor - Nuzhnyy, Dmitry - Kempa, Martin - Savinov, Maxim - Pasciak, Marek - Kamba, Stanislav - Canu, G. - Buscaglia, V.
Broadband dielectric, terahertz, and infrared spectroscopy of BaTiO₃-BaZrO₃ solid solution: from proper ferroelectric over diffuse and relaxor ferroelectrics and dipolar glass to normal dielectric.
Physica Status Solidi B. Roč. 258, č. 10 (2021), č. článku 2100259. ISSN 0370-1972. E-ISSN 1521-3951
Grant CEP: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GF20-20326L
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: soft mode * relaxor * phase transition
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 1.782, rok: 2021
Způsob publikování: Omezený přístup
https://doi.org/10.1002/pssb.202100259

The properties of broadband dielectric spectra of the (1 - x)BaTiO3-xBaZrO3 (BZT-x) solid solution are reviewed and complemented. The spectra are characterized by an overdamped central mode in the microwave range which weakens on cooling. The soft mode and central mode do not soften appreciably and do not contribute substantially to the low-frequency permittivity maximum. The most important dielectric contribution is brought by Cole-Cole relaxation assigned to hopping of Ti ions in the BaTiO3 clusters.
Trvalý link: http://hdl.handle.net/11104/0327667