Internal Friction in Copolymer Vinylidenefluoride with Trifluoroethylene at Ferroelectric Phase Transition


Citar

Texto integral

Acesso aberto Acesso aberto
Acesso é fechado Acesso está concedido
Acesso é fechado Somente assinantes

Resumo

Temperature dependences of internal friction Q–1, obtained at different heating rates of a copolymer VDF/TrFE (75/25) sample, are studied in the temperature range of 290–420 K at a frequency f ≈ 16 Hz. It is shown that the maximum of Q–1 observed in the vicinity of the ferroelectric phase transition (Tc = 393 K) is related to the motion of interphase boundaries and can be described within the low-frequency fluctuation mechanism of internal friction. The diffusion parameter σ of the ferroelectric phase transition is determined. The obtained σ value significantly exceeds the value that is due to possible microinhomogeneity of the chemical composition.

Sobre autores

K. Verkhovskaya

Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”
Russian Academy of Sciences

Autor responsável pela correspondência
Email: vkira123@gmail.com
Rússia, Moscow, 119333

L. Korotkov

Voronezh State Technical University

Email: vkira123@gmail.com
Rússia, Voronezh, 394026

O. Karaeva

ZAO Russaviainter

Email: vkira123@gmail.com
Rússia, Voronezh, 394004

Arquivos suplementares

Arquivos suplementares
Ação
1. JATS XML

Declaração de direitos autorais © Pleiades Publishing, Inc., 2019