X-ray diffraction pattern for BT–xBFO ceramics (a) with x = 0.025 – 1.0 and (b) with x = 0.710 – 0.775 and 1.0, (c) lattice parameter and rhombohedral distortion angle and (d) volume of unit cell for BT–xBFO ceramics with x = 0.710 – 0.775 and 1.0.
Variation of magnetoelectric, piezoelectric, and dielectric properties as a function of BFO mole fraction for BT–xBFO ceramics with x = 0.025 – 1.0; (a) DME coefficient (α DME), (b) phase change of α DME, (c) poling percent, (d) piezoelectric voltage constant (g 33), (e) piezoelectric charge constant (d 33), (f) radial mode electromechanical coupling factor (k p), (g) dielectric constant, (ε) and (h) tangent loss factor (tan δ).
(a) PDFs analysis, (b) room-temperature P – E curves, and (c) room-temperature M – H curves as a function of BFO mole fraction.
(a) DME coefficient (α DME) and(b) CME coefficient (α CME) for BT–0.725BFO/Ni laminates as a function of H bias. Insets are schematic diagrams of DME and CME samples and expanded views of α ME–H bias hysteresis to clearly show the remnant α DME and α CME at zero Hbias .
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