Premium
Structural Studies of Thermal Vibrations in Ferroelectric SbSI
Author(s) -
Itoh K.,
Matsunaga H.,
Nakamura E.
Publication year - 1980
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220970133
Subject(s) - anharmonicity , soft modes , amplitude , atmospheric temperature range , ferroelectricity , condensed matter physics , thermal , dielectric , atom (system on chip) , materials science , phase transition , phase (matter) , crystal (programming language) , vibration , phonon , range (aeronautics) , chemistry , physics , optics , thermodynamics , optoelectronics , programming language , organic chemistry , quantum mechanics , computer science , composite material , embedded system
The anharmonic atomic potential at 1.3 °C and the temperature dependence of thermal amplitudes in SbSI are calculated from crystal structures previously reported. The contribution of the soft mode to the thermal amplitude is found along the c ‐axis for the Sb atom over a wide temperature range around the transition temperature. The temperature dependence of the frequency of the soft transverse optic mode is estimated in the paraelectric phase up to 100 °C.