Probing Local and Global Ferroelectric Phase Stability and Polarization Switching in Ordered Macroporous PZT
نویسندگان
چکیده
منابع مشابه
Probing local and global ferroelectric phase stability and polarization switching in ordered macroporous PZT
We describe the characterization, ferroelectric phase stability and polarization switching in strain-free assemblies of PbZr0.3Ti0.7O3 (PZT) nanostructures. The 3dimensionally ordered macroporous structures present uniquely large areas and volumes of PZT where the microstructure is spatially modulated and the composition is homogeneous. Variable temperature powder X-ray diffraction (XRD) studie...
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First-principles calculations are performed to investigate alloying and fer-roelectric effects in lead zirconate titanate (PZT) with high Ti composition. We find that the main effect of alloying in the paraelectric phase of PZT is the existence of two sets of B–O bonds, i.e., shorter Ti–O bonds vs. longer Zr–O bonds. On the other hand, ferroelectricity leads to the formation of very short coval...
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The electric field-induced antiferroelectric-to-ferroelectric phase transition is investigated through detailed measurements of electric polarization P, longitudinal strain x33, and transverse strain x11 developed under applied electric fields in a series of Pb0.99Nb0.02[(Zr0.57Sn0.43)1−yTiy]0.98O3 ceramics with compositions close to the antiferroelectric/ferroelectric phase boundary. It is fou...
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A phase-field model is developed for predicting the polarization switching and domain structure evolution under an applied electric field in ferroelectric polycrystals. The model takes into account realistic grain structures as well as various energetic contributions, including elastic energy, electrostatic energy, and domain wall energy. A hysteresis loop – average polarization as a function o...
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ژورنال
عنوان ژورنال: Advanced Functional Materials
سال: 2011
ISSN: 1616-301X
DOI: 10.1002/adfm.201002038