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dc.contributor.authorZeches, R. J.en_US
dc.contributor.authorRossell, M. D.en_US
dc.contributor.authorZhang, J. X.en_US
dc.contributor.authorHatt, A. J.en_US
dc.contributor.authorHe, Q.en_US
dc.contributor.authorYang, C. -H.en_US
dc.contributor.authorKumar, A.en_US
dc.contributor.authorWang, C. H.en_US
dc.contributor.authorMelville, A.en_US
dc.contributor.authorAdamo, C.en_US
dc.contributor.authorSheng, G.en_US
dc.contributor.authorChu, Y. -H.en_US
dc.contributor.authorIhlefeld, J. F.en_US
dc.contributor.authorErni, R.en_US
dc.contributor.authorEderer, C.en_US
dc.contributor.authorGopalan, V.en_US
dc.contributor.authorChen, L. Q.en_US
dc.contributor.authorSchlom, D. G.en_US
dc.contributor.authorSpaldin, N. A.en_US
dc.contributor.authorMartin, L. W.en_US
dc.contributor.authorRamesh, R.en_US
dc.date.accessioned2014-12-08T15:08:15Z-
dc.date.available2014-12-08T15:08:15Z-
dc.date.issued2009-11-13en_US
dc.identifier.issn0036-8075en_US
dc.identifier.urihttp://dx.doi.org/10.1126/science.1177046en_US
dc.identifier.urihttp://hdl.handle.net/11536/6430-
dc.description.abstractPiezoelectric 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 (BiFeO(3)) 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.en_US
dc.language.isoen_USen_US
dc.titleA Strain-Driven Morphotropic Phase Boundary in BiFeO(3)en_US
dc.typeArticleen_US
dc.identifier.doi10.1126/science.1177046en_US
dc.identifier.journalSCIENCEen_US
dc.citation.volume326en_US
dc.citation.issue5955en_US
dc.citation.spage977en_US
dc.citation.epage980en_US
dc.contributor.department材料科學與工程學系zh_TW
dc.contributor.departmentDepartment of Materials Science and Engineeringen_US
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