Mapping the complex evolution of ferroelastic/ferroelectric domain patterns in epitaxially strained PbTiO3 heterostructures
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866929225506750464 |
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| author | Lichtensteiger, Céline Hadjimichael, Marios Zatterin, Edoardo Su, Chia-Ping Gaponenko, Iaroslav Tovaglieri, Ludovica Paruch, Patrycja Gloter, Alexandre Triscone, Jean-Marc |
| author_facet | Lichtensteiger, Céline Hadjimichael, Marios Zatterin, Edoardo Su, Chia-Ping Gaponenko, Iaroslav Tovaglieri, Ludovica Paruch, Patrycja Gloter, Alexandre Triscone, Jean-Marc |
| contents | We study the complex ferroelastic/ferroelectric domain structure in the prototypical ferroelectric PbTiO3 epitaxially strained on (110)o-oriented DyScO3 substrates, using a combination of atomic force microscopy, laboratory and synchrotron x-ray diffraction and high resolution scanning transmission electron microscopy. We observe that the anisotropic strain imposed by the orthorhombic substrate creates a large asymmetry in the domain configuration, with domain walls macroscopically aligned along one of the two in-plane directions. We show that the periodicity as a function of film thickness deviates from the Kittel law. As the ferroelectric film thickness increases, we find that the domain configuration evolves from flux-closure to a/c-phase, with a larger scale arrangement of domains into superdomains. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2304_06948 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Mapping the complex evolution of ferroelastic/ferroelectric domain patterns in epitaxially strained PbTiO3 heterostructures Lichtensteiger, Céline Hadjimichael, Marios Zatterin, Edoardo Su, Chia-Ping Gaponenko, Iaroslav Tovaglieri, Ludovica Paruch, Patrycja Gloter, Alexandre Triscone, Jean-Marc Materials Science We study the complex ferroelastic/ferroelectric domain structure in the prototypical ferroelectric PbTiO3 epitaxially strained on (110)o-oriented DyScO3 substrates, using a combination of atomic force microscopy, laboratory and synchrotron x-ray diffraction and high resolution scanning transmission electron microscopy. We observe that the anisotropic strain imposed by the orthorhombic substrate creates a large asymmetry in the domain configuration, with domain walls macroscopically aligned along one of the two in-plane directions. We show that the periodicity as a function of film thickness deviates from the Kittel law. As the ferroelectric film thickness increases, we find that the domain configuration evolves from flux-closure to a/c-phase, with a larger scale arrangement of domains into superdomains. |
| title | Mapping the complex evolution of ferroelastic/ferroelectric domain patterns in epitaxially strained PbTiO3 heterostructures |
| topic | Materials Science |
| url | https://arxiv.org/abs/2304.06948 |