Anomalies of hypersonic velocity and attenuation in vinylidene fluoride-trifluoroethylene copolymer from Brillouin scattering | Zendy

Zhimin Liu | Zendy; V. Hugo Schmidt | Zendy

Open Access

Anomalies of hypersonic velocity and attenuation in vinylidene fluoride-trifluoroethylene copolymer from Brillouin scattering

Author(s) -

Zhimin Liu,

V. Hugo Schmidt

Publication year - 1990

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.103934

Subject(s) - materials science , attenuation , brillouin scattering , ferroelectricity , acoustic attenuation , brillouin zone , scattering , refractive index , melting point , fluoride , optics , hypersonic speed , composite material , condensed matter physics , optoelectronics , inorganic chemistry , thermodynamics , chemistry , dielectric , physics , optical fiber

The hypersonic behavior of a vinylidene fluoride and trifluoroethylene (70/30 mol %) copolymer has been investigated by Brillouin scattering without using index matching liquid. Both the glass and ferroelectric transitions are clearly seen in the acoustic behavior. The home‐prepared sample has excellent optical properties and let us obtain sound attenuation information in the temperature range of 23–123 °C, which another investigator did not discuss because of the bad optical properties of the sample surface. Anomalies of sound attenuation near the transition point have been observed.

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