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Far-infrared reflectivity and Raman study in the ferroelectric-ferroelastic crystal of tris(dimethylammonium) nonabromodiantimonate.
Autorzy
Rok wydania
1992
Czasopismo
Numer woluminu
23
Strony
347-356
DOI
10.1002/jrs.1250230606
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
A study of far-infrared (5–400 cm−1) polarized reflectivity spectra and preliminary Raman measurements of the ferroelectric crystal of DMABA, [NH2(CH3)2]3Sb2Br9, were made in the temperature range 80–300 K. The paraelectric–ferroelectric phase transition occurring at Tc = 164 K in this crystal has an impact on low-frequency phonons. Oscillator strengths, induced dipole moments and mode dampings were determined as a function of temperature. Low-frequency dielectric parameters were estimated from infrared reflectivity spectra of DMABA.
Adres publiczny
https://doi.org/10.1002/jrs.1250230606
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