Open AccessThe effect of out-of-plane strain on the electrocaloric performances of P(VDF-TrFE) vertical heteroepitaxial film
Author(s) -
Hangbo Zhang,
Wu Hua-Ping,
Ting Zhou,
Zheng Zhang,
Guozhong Chai
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.247701
Subject(s) - materials science , electrocaloric effect , ferroelectricity , adiabatic process , electric field , condensed matter physics , atmospheric temperature range , polarization (electrochemistry) , composite number , pyroelectricity , optoelectronics , composite material , thermodynamics , dielectric , chemistry , quantum mechanics , physics
Considering the boundary conditions of 1-3-type P(VDF-TrFE) composite ferroelectric film, the effect of out-of-plane strain on the electrocaloric performances of vertical heteroepitaxial film is calculated by the nonlinear thermodynamic theory. The results indicate that the out-of-plane strain can effectively regulate the ferroelectric and electrocaloric performances including the polarization, electrocaloric coefficient and adiabatic temperature change under the action of vertical electric field. In a wide temperature range, the vertical heteroepitaxial film can present higher adiabatic temperature change than the pure P(VDF-TrFE) film by controlling the out-of-plane strain. This indicates that the vertical composite heteroepitaxial film with excellent electrocaloric performances will have potential applications in the microelectronic devices such as micropowers, optical communication diodes and infrared sensors.