Giant Strains in Non-Textured (Bi1/2 Na1/2 )TiO3 -Based Lead-Free Ceramics

Xiaoming Liu; Xiaoli Tan

doi:10.1002/adma.201503768

Giant Strains in Non-Textured (Bi1/2 Na1/2 )TiO3 -Based Lead-Free Ceramics

Adv Mater. 2016 Jan 20;28(3):574-8. doi: 10.1002/adma.201503768. Epub 2015 Nov 24.

Authors

Xiaoming Liu¹, Xiaoli Tan¹

Affiliation

¹ Department of Materials Science and Engineering, Iowa State University, Ames, IA, 50011, USA.

PMID: 26596685
DOI: 10.1002/adma.201503768

Abstract

Giant electric-field-induced strain of 0.70%, corresponding to a d33 * value of 1400 pm V(-1) , is observed in a lead-free (Bi1/2 Na1/2 )TiO3 -based polycrystalline ceramic. This is comparable to the properties of single crystals. An in situ transmission electron microscopy study indicates that the excellent performance originates from phase transitions under the applied electric fields.

Keywords: electric field-induced strain; lead-free ceramics; lead-free piezoelectrics; phase transition.