Polarization and strain response in Bi0.5K0.5TiO3-BiFeO3 ceramics

Applied Physics Letters - Tập 101 Số 25 - 2012
Maxim I. Morozov1, Mari‐Ann Einarsrud1, Tor Grande1
1Department of Materials Science and Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway

Tóm tắt

Highly dense and phase-pure ferroelectric ceramics in the (1-x)Bi0.5K0.5TiO3–xBiFeO3 system have been prepared and examined in a wide range of composition (0.1 ≤ x ≤ 0.9). The dielectric and electromechanical properties have been shown to reach a maximum value at x ≈ 0.25 demonstrating a high strain performance (250–370 pm/V in the temperature range 25–175 °C). Stability of the strain response with respect to temperature, as well as frequency and amplitude of the driving electric field is reported and discussed.

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Applied Physics Letters

Tập 101 Số 25

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