Structural Evolution and Enhanced Energy Density, Ferroelectric Property Investigation in Gd Substituted NBT – BT Lead Free Ferroelectric Ceramics

Knowledge of the statics and dynamics of ferroelectric domains is of immense importance since they are directly correlated with macroscopic polarization and strain. For the present work, piezoresponse force microscopy (PFM) is used to afford insight into field-induced phase transitions and local switching properties of a (1–2x)Na0.5Bi0.5TiO3–xBiFeO3–xPbTiO3 system for compositions, x = 0.01, 0.03, 0.05, and 0.07. Rietveld analysis of x-ray diffraction data reveals crystallization of the compound in single and dual phases in the chosen compositions. Upon the application of a local electric field, a phase transition from relaxor to normal ferroelectric (FE) is observed for all samples. A decrease in degree of non-ergodicity is realized within this composition range, which is found by analyzing the stability of field-induced ferroelectric domains. The field-induced FE domains for lower concentrations of x are found to be irreversible and a reversible nature was found for higher values of x. In addition, spatial variations of local switching parameters are investigated with the help of switching spectroscopic-PFM and a maximum local d33 was found for compositions having dual phases.

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Structural Evolution and Enhanced Energy Density, Ferroelectric Property Investigation in Gd Substituted NBT – BT Lead Free Ferroelectric Ceramics

Cited by 4 publications

References 32 publications

Improved dielectric, ferroelectric, and electrocaloric properties by Yttrium substitution in (Na0.5 Bi0.5)0.94 Ba0.06TiO3-based ceramics

Improved dielectric, ferroelectric, and electrocaloric properties by Yttrium substitution in (Na0.5 Bi0.5)0.94 Ba0.06TiO3-based ceramics

Ferroelectric Properties and Electrocaloric Effect in Dy2O3 Substitution on Lead-Free (Na0.5 Bi0.5)0.94 Ba0.06TiO3 Ceramic

Investigation on degree of non-ergodicity and local piezoelectric properties in Na0.5Bi0.5TiO3–BiFeO3–PbTiO3 system

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