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Soft mode in heteroepitaxial (Ba, Sr)TiO3/MgO thin films

Title
Soft mode in heteroepitaxial (Ba, Sr)TiO3/MgO thin films
Type
Article in International Scientific Journal
Year
2000
Authors
Yuzyuk, YI
(Author)
Other
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Almeida, A
(Author)
FCUP
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Chaves, MR
(Author)
FCUP
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Alyoshin, VA
(Author)
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Zakharchenko, IN
(Author)
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Sviridov, EV
(Author)
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Journal
Vol. 222
Pages: 535-540
ISSN: 0370-1972
Publisher: Wiley-Blackwell
Other information
Authenticus ID: P-000-YCJ
Abstract (EN): Polarized Raman spectra of tetragonally distorted (Ba1-xSrx)TiO3/MgO ferroelectric films were obtained in special scattering geometries using a micro-Raman set-up. The underdamped E(TO) soft mode was unambiguously observed in the films with x = 0.30 and 0.45. The low-temperature behaviour of the E(TO) soft mode for x = 0.45 was found substantially different from those observed in pure crystals and bulk solid solutions.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 6
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