Enhanced piezoelectricity and nature of electric-field induced structural phase transformation in textured lead-free piezoelectric Na 0.5Bi 0.5TiO 3-BaTiO 3 ceramics

Deepam Maurya, Abhijit Pramanick, Ke An, Shashank Priya

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Abstract

This letter provides a comparative description of the properties of textured and randomly oriented poly-crystalline lead-free piezoelectric 0.93(Na 0.5Bi 0.5TiO 3)-0.07BaTiO 3 (NBT-BT) ceramics. A high longitudinal piezoelectric constant of (d 33) ∼ 322 pC/N was obtained in (001) PC textured NBT-7BT ceramics, which is almost ∼2× times the d 33 coefficient reported for randomly oriented ceramics of the same composition. In situ neutron diffraction experiments revealed that characteristically different structural responses are induced in textured and randomly oriented NBT-BT ceramics upon application of electric fields (E), which are likely related to the varying coherence lengths of polar nanoregions and internal stresses induced by domain switching.

Original languageEnglish (US)
Article number172906
JournalApplied Physics Letters
Volume100
Issue number17
DOIs
StatePublished - Apr 23 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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