@article{33544,
  keywords = {Energy, Electrochemistry, Global climate, Unclassified drug, Electric field, Article, Chemical structure, Priority journal, Bismuth, Ferrite, Piezoelectricity, Bismuth ferrite, Electricity generation, Electromagnetic field, Bismuth derivative, Surface property, Morphotype, Molecular mechanics},
  author = {R.J Zeches and M.D Rossell and J.X Zhang and A.J Hatt and Q He and C.-H Yang and A Kumar and C.H Wang and A Melville and C Adamo and G Sheng and Y.-H Chu and J.F Ihlefeld and R Erni and C Ederer and V Gopalan and L.Q Chen and D.G Schldin and N.A Spaldin and L.W Martin and Ramamoorthy Ramesh},
  title = {A strain-driven morphotropic phase boundary in bifeO3},
  abstract = {Piezoelectric materials, which convert mechanical to electrical energy and vice versa, are typically characterized by the intimate coexistence of two phases across a morphotropic phase boundary. Electrically switching one to the other yields large electromechanical coupling coefficients. Driven by global environmental concerns, there is currently a strong push to discover practical lead-free piezoelectrics for device engineering. Using a combination of epitaxial growth techniques in conjunction with theoretical approaches, we show the formation of a morphotropic phase boundary through epitaxial constraint in lead-free piezoelectric bismuth ferrite (BiFeO3) films. Electric field-dependent studies show that a tetragonal-like phase can be reversibly converted into a rhombohedral-like phase, accompanied by measurable displacements of the surface, making this new lead-free system of interest for probe-based data storage and actuator applications.},
  year = {2009},
  journal = {Science},
  volume = {326},
  number = {5955},
  pages = {977-980},
  issn = {00368075},
  doi = {10.1126/science.1177046},
  note = {cited By 780},
  language = {eng},
}