Polar domains in lead titanate films under tensile strain |
| |
Authors: | Catalan G Janssens A Rispens G Csiszar S Seeck O Rijnders G Blank D H A Noheda B |
| |
Institution: | Materials Science Centre, University of Groningen, Groningen 9747AG, The Netherlands. gcat05@esc.cam.ac.uk |
| |
Abstract: | Thin films of PbTiO3, a classical ferroelectric, have been grown under tensile strain on single-crystal substrates of DyScO3. The films, of only 5 nm thickness, grow fully coherent with the substrate, as evidenced by synchrotron x-ray diffraction. A mapping of the reciprocal space reveals intensity modulations (satellites) due to regularly spaced polar domains in which the polarization appears rotated away from the substrate normal, characterizing a low-symmetry phase not observed in the bulk material. This could have important practical implications since these phases are known to be responsible for ultrahigh piezoelectric responses in complex systems. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|