Effect of the composition and sintering process on the electrical properties in Pb(Mg1/3 Nb2/3)O3–PbTiO3 ceramics

Spark Plasma Sintering as a Useful Technique to the Nanostructuration of Piezo‐Ferroelectric Materials

“…[81][82][83] The relative role of extrinsic mechanisms, like domain wall motion in piezoelectric properties, was deduced to be strongly influenced by grain size. [84] For these reasons, attempts have been made to prepare ceramics with controlled grain growth and high relative density by applying different techniques, [85][86][87][88] including conventional pressure-less sintering, microwave sintering, or hot-isostatic pressing. Analogously, the application of hot pressing and atmosphere-controlled sintering has been reported for the fabrication of transparent PLZT (lanthanum-modified lead zirconate titanate) ceramics.…”

Effect of Ferrite Concentration on Dielectric and Magnetoelectric Properties in (1-x)Pb(Mg1/3Nb2/3)0.68Ti0.32O3+(x) CoFe2O4Particulate Composites

“…A maximum value for the ME coefficient for ferrite concentration close to 50% was predicted by Nan and collaborators [4]. However, from the best of our knowledge, earlier reports have only shown experimental results with a continuous decreasing of the ME signal with the increase of the ferrite concentration due to an electric conductivity increasing [7][8][9][10]. These results for the ME output can be explained by a combination of two effects that come with the increasing of the electrical condutivity [7]: (i) low resistivity of ME composites limits the electric poling at high voltage, which restricts the piezoelectricity in the PMN-PT phase and results in low magnitude of the ME voltage coefficient; and/or, (ii) low resistivity ME composites are full of percolation paths formed by the ferrite conductive phase that causes leakage of charges carriers and a reduction in ME voltage coefficient.…”

Domain Reorientation in Ferroelectric-Ferroelastic Ceramics

“…The reached relative densities were higher than 98% for all samples. The experimental procedure to prepare the ceramics is described in details in previous works [6,17]. Scanning electron micrographs revealed an average grain size around 3.5 µm for the PZT ceramics and 2.5 µm for the PMN-PT samples.…”