| Light-induced size changes in BiFeO3 crystals. | |
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MedLine Citation:
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PMID: 20657588 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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Multifunctional oxides are promising materials because of their fundamental physical properties as well as their potential in applications. Among these materials, multiferroics exhibiting ferroelectricity and magnetism are good candidates for spin electronic applications using the magnetoelectric effect, which couples magnetism and ferroelectricity. Furthermore, because ferroelectrics are insulators with a reasonable bandgap, photons can efficiently interact with electrons leading to photoconduction or photovoltaic effects. However, until now, coupling of light with mechanical degrees of freedom has been elusive, although ferroelasticity is a well-known property of these materials. Here, we report on the observation, for the first time, of a substantial visible-light-induced change in the dimensions of BiFeO(3) crystals at room temperature. The relative light-induced photostrictive effect is of the order of 10(-5) with response times below 0.1 s. It depends on the polarization of incident light as well as applied magnetic fields. This opens the perspective of combining mechanical, magnetic, electric and optical functionalities in future generations of remote switchable devices. |
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Authors:
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B Kundys; M Viret; D Colson; D O Kundys |
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Publication Detail:
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Type: Letter Date: 2010-07-25 |
Journal Detail:
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Title: Nature materials Volume: 9 ISSN: 1476-1122 ISO Abbreviation: Nat Mater Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-09-24 Completed Date: 2010-10-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101155473 Medline TA: Nat Mater Country: England |
Other Details:
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Languages: eng Pagination: 803-5 Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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