title: Nanoscale Atomic Displacements Ordering for Enhanced Piezoelectric Properties in Lead-Free ABO3 Ferroelectrics.
abstract: In situ synchrotron X-ray diffuse scattering and inelastic neutron scattering measurements from a prototype ABO3 ferroelectric single-crystal are used to elucidate how electric fields along a nonpolar direction can enhance its piezoelectric properties. The central mechanism is found to be a nanoscale ordering of B atom displacements, which induces increased lattice instability and therefore a greater susceptibility to electric-field-induced mechanical deformation.
authors.affiliation: Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong SAR.
authors.forename: Abhijit
authors.initials: A
authors.lastname: Pramanick
authors.affiliation: Center for Materials Crystallography, iNano & Department of Chemistry, Aarhus University, Aarhus, Denmark.
authors.forename: Mads R V
authors.initials: MR
authors.lastname: Jørgensen
authors.affiliation: Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
authors.forename: Souleymane O
authors.initials: SO
authors.lastname: Diallo
authors.affiliation: Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Christianson
authors.affiliation: Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
authors.forename: Jaime A
authors.initials: JA
authors.lastname: Fernandez-Baca
authors.affiliation: Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
authors.forename: Christina
authors.initials: C
authors.lastname: Hoffmann
authors.affiliation: Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Wang
authors.affiliation: Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
authors.forename: Si
authors.initials: S
authors.lastname: Lan
authors.affiliation: Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong SAR.
authors.forename: Xun-Li
authors.initials: XL
authors.lastname: Wang
mesh_terms: D017609:Barium Compounds / Q000737:chemistry*; D004560:Electricity; D007854:Lead / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry; D033363:Neutron Diffraction; D009556:Niobium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D011188:Potassium / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014159:Transducers; D014961:X-Ray Diffraction
chemical_list: D017609:Barium Compounds; D010087:Oxides; D009556:Niobium; C477466:potassium niobate; C024547:barium titanate(IV); D007854:Lead; D014025:Titanium; D011188:Potassium
keywords: ceramics; ferroelectrics; materials science; nanotechnology; piezoelectric properties