Structural characterization on batio3/la2/3ca1/3mno3 bilayers deposited on nb:srtio3
In this work we have investigated structural properties of La2/3Ca1/3MnO3/BaTiO3 bilayers grown on Nb:SrTiO3 substrates. The films were deposited by pulsed laser deposition (PLD) technique at high-pressure oxygen atmosphere and at a substrate temperature of 820 °C. . We report here the effect of the...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | Colombia |
| Institución: | Universidad Nacional de Colombia |
| Repositorio: | Repositorio UN |
| Idioma: | español |
| OAI Identifier: | oai:repositorio.unal.edu.co:unal/50922 |
| Acceso en línea: | https://repositorio.unal.edu.co/handle/unal/50922 http://bdigital.unal.edu.co/44964/ |
| Access Level: | acceso abierto |
| Palabra clave: | multifunctional materials multiferroic oxides ferroelectricity ferromagnetism materiales multifuncionales multiferroicos óxidos ferroelectricidad ferromagnetismo |
| Sumario: | In this work we have investigated structural properties of La2/3Ca1/3MnO3/BaTiO3 bilayers grown on Nb:SrTiO3 substrates. The films were deposited by pulsed laser deposition (PLD) technique at high-pressure oxygen atmosphere and at a substrate temperature of 820 °C. . We report here the effect of the thickness of the ferroelectric BaTiO3 layer on the structural properties of the ferromagnetic La2/3Ca1/3MnO3. We choose nominal thickness for the ferroelectric layer of 20, 50 and 100nm maintaining constant the ferromagnetic layer at 50 nm. The structural study in the bilayers by X-ray diffraction shows us that the Bragg angle of the La2/3Ca1/3MnO3 layer maintains the same position that that for a 50 nm-thick La2/3Ca1/3MnO3 layer, whereas the position of the BaTiO3 peak shifts toward lower angles indicating that the BTO layer grew with more internal stress than that for the individual 50 nm-thick BaTiO3 film gown under identical parameters (oxygen pressure and substrate temperature 400 mTorr for La2/3Ca1/3MnO3 (LCMO) and 3.0 mTorr for BaTiO3 (BTO)). |
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