title: Large field-induced-strain at high temperature in ternary ferroelectric crystals.
abstract: The new generation of ternary Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3ferroelectric single crystals have potential applications in high power devices due to their surperior operational stability relative to the binary system. In this work, a reversible, large electric field induced strain of over 0.9% at room temperature, and in particular over 0.6% above 380 K was obtained. The polarization rotation path and the phase transition sequence of different compositions in these ternary systems have been determined with increasing electric field applied along [001] direction based on x-ray diffraction data. Thereafter, composition dependence of field-temperature phase diagrams were constructed, which provide compositional and thermal prospectus for the electromechanical properties. It was found the structural origin of the large stain, especially at higher temperature is the lattice parameters modulated by dual independent variables in composition of these ternary solid solution crystals.
authors.affiliation: School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China.
authors.forename: Yaojin
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Chen
authors.affiliation: School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China.
authors.forename: Guoliang
authors.initials: G
authors.lastname: Yuan
authors.affiliation: Shanghai Institute of Ceramics, Chinese Academy of Sciences, 215 Chengbei Road, Jiading, Shanghai 201800, China.
authors.forename: Haosu
authors.initials: H
authors.lastname: Luo
authors.affiliation: Materials Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA.
authors.forename: Jiefang
authors.initials: J
authors.lastname: Li
authors.affiliation: Materials Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA.
authors.forename: D
authors.initials: D
authors.lastname: Viehland