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Giant Strains in Non-Textured (Bi1/2 Na1/2 )TiO3 -Based Lead-Free Ceramics
1Department of Materials Science and Engineering, Iowa State University, Ames, IA, 50011, USA.
Advanced Materials (Deerfield Beach, Fla.)
|November 25, 2015
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 strainlead-free ceramicslead-free piezoelectricsphase transitionelectric field strainlead-free materialspiezoelectric ceramicsphase transitions in ceramics
