Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/81311
Título: | Ferroelectricity and negative piezoelectric coefficient in orthorhombic phase pure ZrO2 thin films |
Autor(es): | Silva, José Pedro Basto Istrate, Marian C. Hellenbrand, Markus Jan, Atif Becker, Maximilian T. Symonowicz, Joanna Figueiras, Fábio G. Lenzi, Veniero Hill, Megan O. Ghica, Corneliu Romanyuk, Konstantin N. Gomes, M. J. M. Martino, Giuliana Di Marques, Luís MacManus-Driscoll, Judith L. |
Palavras-chave: | Orthorhombic phase ZrO 2 films Ferroelectricity Piezoelectricity Ion -beam sputtering Orthorhombic phase ZrO films 2 |
Data: | 2023 |
Editora: | Elsevier 1 |
Revista: | Applied Materials Today |
Citação: | Silva, J. P. B., Istrate, M. C., Hellenbrand, M., Jan, A., Becker, M. T., Symonowicz, J., … MacManus-Driscoll, J. L. (2023, February). Ferroelectricity and negative piezoelectric coefficient in orthorhombic phase pure ZrO2 thin films. Applied Materials Today. Elsevier BV. http://doi.org/10.1016/j.apmt.2022.101708 |
Resumo(s): | A new approach for epitaxial stabilisation of ferroelectric orthorhombic (o-) ZrO2 films with negative piezoelectric coefficient in ∼ 8nm thick films grown by ion-beam sputtering is demonstrated. Films on (011)-Nb:SrTiO3 gave the oriented o-phase, as confirmed by transmission electron microscopy and electron backscatter diffraction mapping, grazing incidence x-ray diffraction and Raman spectroscopy. Scanning probe microscopy techniques and macroscopic polarization-electric field hysteresis loops show ferroelectric behavior, with saturation polarization of ∼14.3 µC/cm2, remnant polarization of ∼9.3 µC/cm2 and coercive field ∼1.2 MV/cm. In contrast to the o-films grown on (011)-Nb:SrTiO3, films grown on (001)-Nb:SrTiO3 showed mixed monoclinic (m-) and o-phases causing an inferior remnant polarization of ∼4.8 µC/cm2, over 50% lower than the one observed for the film grown on (011)-Nb:SrTiO3. Density functional theory (DFT) calculations of the SrTiO3/ZrO2 interfaces support the experimental findings of a stable polar o-phase for growth on (011) Nb:SrTiO3, and they also explain the negative piezoelectric coefficient. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/81311 |
DOI: | 10.1016/j.apmt.2022.101708 |
ISSN: | 2352-9407 |
e-ISSN: | 2352-9407 |
Versão da editora: | https://www.sciencedirect.com/science/article/pii/S2352940722003420 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - FMNC - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1-s2.0-S2352940722003420-main.pdf | 9,89 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons