Ferroelectric-relaxor behavior of Ba(Ti0.7Zr0.3)O3 ceramics

Zhi Yu, Ruyan Guo, A. S. Bhalla

Journal of Applied Physics · 2002 · 275 citations · 16 references

Concepts

Abstract

Ferroelectric-relaxor behavior of Ba(Ti0.7Zr0.3)O3 ceramics is studied in the temperature range from 150 to 450 K. A broad dielectric peak with a high-dielectric maximum exhibits frequency dispersion. The dielectric relaxation rate follows the Vogel–Fulcher relation with E=0.21 eV and TVF=199.6 K. The polarization hysteresis loops were observed with a remnant polarization of 10 μC/cm2 at 175 K. The high-dielectric constant and high-polarization properties are expected to find practical applications at low temperatures.

References

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