Combinatorial discovery of a lead-free morphotropic phase boundary in a thin-film piezoelectric perovskite

Abstract

We report on the discovery of a lead-free morphotropic phase boundary in Sm doped BiFeO3 with a simple perovskite structure using the combinatorial thin film strategy. The boundary is a rhombohedral to pseudo-orthorhombic structural transition which exhibits a ferroelectric (FE) to antiferroelectric (AFE) transition at approximately Bi0.86Sm0.14FeO3 with dielectric constant and out-of-plane piezoelectric coefficient comparable to those of epitaxial (001) oriented Pb(Zr,Ti)O3 (PZT) thin films at the MPB. The discovered composition may be a strong candidate of a Pb-free piezoelectric replacement of PZT.

16 pages, 5 figures, submitted to Applied Physics Letters

References in corpus (4)

• Origin of the high piezoelectric response in PbZr(1-x)TixO3
• Origin of magnetoelectric behavior in BiFeO${}_3$
• Universal Phase Diagram for High-Piezoelectric Perovskite Systems
• Predicting morphotropic phase boundary locations and transition temperatures in Pb- and Bi-based perovskite solid solutions from crystal chemical data and first-principles calculations

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• Coexistence of Ferroelectric Triclinic Phases and Origin of Large Piezoelectric Responses in Highly Strained BiFeO3 films
• Unsupervised Phase Mapping of X-ray Diffraction Data by Nonnegative Matrix Factorization Integrated with Custom Clustering
• Phase Coexistence Near a Morphotropic Phase Boundary in Sm-doped BiFeO3 Films
• Photostriction in BiFeO3: wavelength dependence
• Nanoscale ferroelectricity in pseudo-cubic sol-gel derived barium titanate -- bismuth ferrite (BaTiO${}_3$-BiFeO${}_3$) solid solutions
• Piezoelectric nonlinearity and frequency dispersion of the direct piezoelectric response of BiFeO3 ceramics
• Controllable Defect Driven Symmetry Change and Domain Structure Evolution in BiFeO3 with Enhanced Tetragonality
• Combinatorial search of superconductivity in Fe-B composition spreads
• Phase Transitions and Antiferroelectrivity in BiFeO3 from Atomic Level Simulations
• Building Free Energy Functional from Atomically-Resolved Imaging: Atomic Scale Phenomena in La-doped BiFeO3
• Terahertz and Infrared Studies of Antiferroelectric Phase Transition in Multiferroic Bi_0.85Nd_0.15FeO_3
• Co-orchestration of Multiple Instruments to Uncover Structure-Property Relationships in Combinatorial Libraries
• Ferroelectric tunnel junctions