What is it about?
Ferroelectric is a material with turnable dipoles. When the dipoles are in parallel direction under the action of electric field, they couple together to form domains, and become less disordering to decrease entropy. The changes of dipoles in various directions of 3D ferroelectrics, turning of diploes (reorientation), and coupling will produce thermal effect to give rise to electrocaloric effect. The paper derived these effects in theory and compared with experimental results.
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Why is it important?
Turning of dipoles in ferroelectrics can be used in electrocaloric effect.
Perspectives
Analysis on mechanisms of electrocaloric effect is arising from various physical principles, and basic characteristics of ferroelectrics (turnable dipoles and domains).
Prof. Wan Qiang Cao
Hubei univeristy
Read the Original
This page is a summary of: Influence of polarization, reorientation, and coupling of dipole on electrocaloric effect in ferroelectrics, International Journal of Applied Ceramic Technology, November 2019, Wiley,
DOI: 10.1111/ijac.13411.
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