In situ X-ray diffraction investigation of electric-field-induced switching in a hybrid improper ferroelectric
© Gabriel Clarke et al. 2021.
| Publié dans: | Journal of applied crystallography. - 1998. - 54(2021), Pt 2 vom: 01. Apr., Seite 533-540 |
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| Auteur principal: | |
| Autres auteurs: | , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2021
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| Accès à la collection: | Journal of applied crystallography |
| Sujets: | Journal Article Ruddlesden–Popper hybrid improper ferroelectrics in situ diffraction |
| Résumé: | © Gabriel Clarke et al. 2021. Improper ferroelectric mechanisms are increasingly under investigation for their potential to expand the current catalogue of functional materials whilst promoting couplings between ferroelectricity and other technologically desirable properties such as ferromagnetism. This work presents the results of an in situ synchrotron X-ray diffraction experiment performed on samples of Ca2.15Sr0.85Ti2O7 in an effort to elucidate the mechanism of hybrid improper ferroelectric switching in this compound. By simultaneously applying an electric field and recording diffraction patterns, shifts in the intensity of superstructure peaks consistent with one of the switching mechanisms proposed by Nowadnick & Fennie [Phys. Rev. B, (2016), 94, 104105] are observed. While the experiment only achieves a partial response, comparison with simulated data demonstrates a preference for a one-step switching mechanism involving an unwinding of the octahedral rotation mode in the initial stages of switching. These results represent some of the first reported experimental diffraction-based evidence for a switching mechanism in an improper ferroelectric |
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| Description: | Date Revised 16.07.2022 published: Electronic-eCollection figshare: 10.6084/m9.figshare.13607615 Citation Status PubMed-not-MEDLINE |
| ISSN: | 0021-8898 |
| DOI: | 10.1107/S1600576721001096 |