http://hdl.handle.net/20.500.12128/7540
Tytuł: | Precursor Phenomena of Barium Titanate Single Crystals Grown Using a Solid-State Single Crystal Growth Method Studied with Inelastic Brillouin Light Scattering and Birefringence Measurements |
Autor: | Oh, Soo Han Ko, Jae-Hyeon Lee, Ho-Yong Lazar, Iwona Roleder, Krystian |
Słowa kluczowe: | barium titanate; BaTiO3; Brillouin spectroscopy; acoustic property; precursor phenomena |
Data wydania: | 2018 |
Źródło: | Molecules, Vol. 23, iss. 12 (2018), Art. No. 3171 |
Abstrakt: | The nature of precursor phenomena in the paraelectric phase of ferroelectrics is one of the main questions to be resolved from a fundamental point of view. Barium titanate (BaTiO3) is one of the most representative perovskite-structured ferroelectrics intensively studied until now. The pretransitional behavior of BaTiO3 single crystal grown using a solid-state crystal growth (SSCG) method was investigated for the first time and compared to previous results. There is no melting process in the SSCG method, thus the crystal grown using a SSCG method have inherent higher levels of impurity and defect concentrations, which is a good candidate for investigating the effect of crystal quality on the precursor phenomena. The acoustic, dielectric, and piezoelectric properties, as well as birefringence, of the SSCG-grown BaTiO3 were examined over a wide temperature range. Especially, the acoustic phonon behavior was investigated in terms of Brillouin spectroscopy, which is a complementary technique to Raman spectroscopy. The obtained precursor anomalies of the SSCG-grown BaTiO3 in the cubic phase were similar to those of other single crystals, in particular, of high-quality single crystal grown by top-seeded solution growth method. These results clearly indicate that the observed precursor phenomena are common and intrinsic effect irrespective of the crystal quality. |
URI: | http://hdl.handle.net/20.500.12128/7540 |
DOI: | 10.3390/molecules23123171 |
ISSN: | 1420-3049 |
Pojawia się w kolekcji: | Artykuły (WNŚiT) |
Plik | Opis | Rozmiar | Format | |
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Oh_Precursor_phenomena_of_Barium_Titanate.pdf | 1,92 MB | Adobe PDF | Przejrzyj / Otwórz |
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