Built-in voltage in thin ferroelectric PbTiO3 films: the effect of electrostatic boundary conditions
We have studied the built-in voltage in heterostructures composed of ferroelectric PbTiO _3 and dielectric spacers of SrTiO _3 , grown on SrTiO _3 substrates with SrRuO _3 bottom electrodes. We used piezoresponse force microscopy to determine the domain structure of the samples and perform local swi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2016-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/18/4/043030 |
| _version_ | 1797750968657379328 |
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| author | Céline Lichtensteiger Christian Weymann Stéphanie Fernandez-Pena Patrycja Paruch Jean-Marc Triscone |
| author_facet | Céline Lichtensteiger Christian Weymann Stéphanie Fernandez-Pena Patrycja Paruch Jean-Marc Triscone |
| author_sort | Céline Lichtensteiger |
| collection | DOAJ |
| description | We have studied the built-in voltage in heterostructures composed of ferroelectric PbTiO _3 and dielectric spacers of SrTiO _3 , grown on SrTiO _3 substrates with SrRuO _3 bottom electrodes. We used piezoresponse force microscopy to determine the domain structure of the samples and perform local switching experiments. By increasing the thickness of the SrTiO _3 spacer layers, we were able to tune the polarization configuration in the PbTiO _3 films by gradually going from a monodomain configuration to a polydomain one. The built-in voltage was found to be linked to the choice of electrodes and to the thickness of the spacer layer. The stability of artificially poled regions was also affected, with a faster back-switching for the samples with the thicker SrTiO _3 spacers. We have additionally compared samples with and without a top SrRuO _3 electrode, showing that a top electrode layer results in a stronger built-in voltage, responsible for a preferential monodomain configuration and a very fast back-switching of artificially poled regions. |
| first_indexed | 2024-03-12T16:41:30Z |
| format | Article |
| id | doaj.art-7808a8ad6155408183fea260f62626b4 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:41:30Z |
| publishDate | 2016-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-7808a8ad6155408183fea260f62626b42023-08-08T14:30:21ZengIOP PublishingNew Journal of Physics1367-26302016-01-0118404303010.1088/1367-2630/18/4/043030Built-in voltage in thin ferroelectric PbTiO3 films: the effect of electrostatic boundary conditionsCéline Lichtensteiger0Christian Weymann1Stéphanie Fernandez-Pena2Patrycja Paruch3Jean-Marc Triscone4DQMP— University of Geneva , 24 Quai Ernest Ansermet, CH—1211 Geneva 4, SwitzerlandDQMP— University of Geneva , 24 Quai Ernest Ansermet, CH—1211 Geneva 4, SwitzerlandDQMP— University of Geneva , 24 Quai Ernest Ansermet, CH—1211 Geneva 4, SwitzerlandDQMP— University of Geneva , 24 Quai Ernest Ansermet, CH—1211 Geneva 4, SwitzerlandDQMP— University of Geneva , 24 Quai Ernest Ansermet, CH—1211 Geneva 4, SwitzerlandWe have studied the built-in voltage in heterostructures composed of ferroelectric PbTiO _3 and dielectric spacers of SrTiO _3 , grown on SrTiO _3 substrates with SrRuO _3 bottom electrodes. We used piezoresponse force microscopy to determine the domain structure of the samples and perform local switching experiments. By increasing the thickness of the SrTiO _3 spacer layers, we were able to tune the polarization configuration in the PbTiO _3 films by gradually going from a monodomain configuration to a polydomain one. The built-in voltage was found to be linked to the choice of electrodes and to the thickness of the spacer layer. The stability of artificially poled regions was also affected, with a faster back-switching for the samples with the thicker SrTiO _3 spacers. We have additionally compared samples with and without a top SrRuO _3 electrode, showing that a top electrode layer results in a stronger built-in voltage, responsible for a preferential monodomain configuration and a very fast back-switching of artificially poled regions.https://doi.org/10.1088/1367-2630/18/4/043030ferroelectricityultrathin epitaxial filmsinterfacespiezo-force microscopypolarizationelectrostatic boundary conditions |
| spellingShingle | Céline Lichtensteiger Christian Weymann Stéphanie Fernandez-Pena Patrycja Paruch Jean-Marc Triscone Built-in voltage in thin ferroelectric PbTiO3 films: the effect of electrostatic boundary conditions New Journal of Physics ferroelectricity ultrathin epitaxial films interfaces piezo-force microscopy polarization electrostatic boundary conditions |
| title | Built-in voltage in thin ferroelectric PbTiO3 films: the effect of electrostatic boundary conditions |
| title_full | Built-in voltage in thin ferroelectric PbTiO3 films: the effect of electrostatic boundary conditions |
| title_fullStr | Built-in voltage in thin ferroelectric PbTiO3 films: the effect of electrostatic boundary conditions |
| title_full_unstemmed | Built-in voltage in thin ferroelectric PbTiO3 films: the effect of electrostatic boundary conditions |
| title_short | Built-in voltage in thin ferroelectric PbTiO3 films: the effect of electrostatic boundary conditions |
| title_sort | built in voltage in thin ferroelectric pbtio3 films the effect of electrostatic boundary conditions |
| topic | ferroelectricity ultrathin epitaxial films interfaces piezo-force microscopy polarization electrostatic boundary conditions |
| url | https://doi.org/10.1088/1367-2630/18/4/043030 |
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