Relaxor ferroelectric - a ferroelectric with power-law distribution of Curie temperature

What is it about?

Relaxor ferroelectrics have the frequency dispersion of dielectric constant. The traditional method used a concept of “polar nano region, PNR” to explain qualitatively. Different from the above method, an idea of “power law distribution of Curie temperature, Tc” is proposed in this paper, and the real and imaginary equations of dielectric constant with dispersion are obtained through mathematical derivation. The numerical simulation results are in agreement with the experimental results. Simultaneously, the model explains the reason why the PNR as metastable state changes with electric field and temperature.

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Why is it important?

The complex relaxation phenomenon is actually a simple power law distribution of components. Numerous experiments have demonstrated that this distribution exists in various forms in various materials, affecting their mechanical and electrical properties.

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