Atıf İçin Kopyala
YURTSEVEN H. H., Kiraci A.
FERROELECTRICS, cilt.437, ss.137-148, 2012 (SCI-Expanded)
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Yayın Türü:
Makale / Tam Makale
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Cilt numarası:
437
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Basım Tarihi:
2012
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Doi Numarası:
10.1080/00150193.2012.742343
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Dergi Adı:
FERROELECTRICS
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Derginin Tarandığı İndeksler:
Science Citation Index Expanded (SCI-EXPANDED), Scopus
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Sayfa Sayıları:
ss.137-148
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Anahtar Kelimeler:
Damping constant, relaxation time, hexagonal barium titanate, TEMPERATURE-DEPENDENCE, PHASE-TRANSITIONS, RAMAN-SCATTERING, NEUTRON-SCATTERING, PHONONS, SPECTROSCOPY, FREQUENCY, BATIO3
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Orta Doğu Teknik Üniversitesi Adresli:
Evet
Özet
The temperature dependence of the damping constant is calculated below the transition temperature (T-0 = 222K) in the ferroelectric phase of hexagonal barium titanate. The damping constant of the coupled soft-optic and acoustic mode which causes an intense central peak in the light scattering spectra, is calculated using the soft mode-hard mode coupling model and the energy fluctuation model for barium titanate.