Domain walls in ferroelectrics.
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| Title: | Domain walls in ferroelectrics. |
|---|---|
| Authors: | Mantri, Sukriti1 (AUTHOR) s.mantri@unsw.edu.au, Daniels, John1 (AUTHOR) |
| Source: | Journal of the American Ceramic Society. Apr2021, Vol. 104 Issue 4, p1619-1632. 14p. 2 Diagrams, 3 Charts, 1 Map. |
| Subjects: | Domain walls (String models), Ferroelectric crystals, Unit cell, Electric units, Domain walls (Ferromagnetism), Analytical solutions |
| Abstract: | Spontaneous unit‐cell deformation accompanies spontaneous polarization in perovskite ferroelectrics, thereby making it energetically favorable for domain walls to form on particular planes that satisfy mechanical compatibility. Historically, domain walls are found analytically, solving for walls with compatible strains within the wall plane. However, analytical solutions do not give any information about relative energetics of nonideal domain walls. Here, the orientation of the most favorable domain walls and the relative energetics of nonideal domain walls are predicted by calculating strain mismatch and charge discontinuity over all possible domain wall orientations. This is done for common ferroelectric phase symmetries of tetragonal, rhombohedral, orthorhombic, and monoclinic type. In tetragonal and rhombohedral symmetry, the domain walls are independent of any external stimulus as long as the symmetry is maintained. In orthorhombic and monoclinic symmetry, the orientation of certain mechanically permissible domain walls changes with temperature and/or electric field as the unit cell distorts, while others do not. Additionally, in monoclinic systems, domain wall planes are shown to exist that are not perfectly permissible but are very close to permissible, thus, these walls were not found by prior analytical methods. The visualization of strain compatibility of all the domain walls makes it easy to see precisely on which planes domain walls are expected or not expected and how the domain walls change their orientation under the effect of external stimulus. Such an analysis can also be used to investigate the relative and changing energetics of nonideal domain walls in systems under thermal, compositional, electrical, and mechanical stimuli. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 148429257 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Domain walls in ferroelectrics. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Mantri%2C+Sukriti%22">Mantri, Sukriti</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> s.mantri@unsw.edu.au</i><br /><searchLink fieldCode="AR" term="%22Daniels%2C+John%22">Daniels, John</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+the+American+Ceramic+Society%22">Journal of the American Ceramic Society</searchLink>. Apr2021, Vol. 104 Issue 4, p1619-1632. 14p. 2 Diagrams, 3 Charts, 1 Map. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Domain+walls+%28String+models%29%22">Domain walls (String models)</searchLink><br /><searchLink fieldCode="DE" term="%22Ferroelectric+crystals%22">Ferroelectric crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Unit+cell%22">Unit cell</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+units%22">Electric units</searchLink><br /><searchLink fieldCode="DE" term="%22Domain+walls+%28Ferromagnetism%29%22">Domain walls (Ferromagnetism)</searchLink><br /><searchLink fieldCode="DE" term="%22Analytical+solutions%22">Analytical solutions</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Spontaneous unit‐cell deformation accompanies spontaneous polarization in perovskite ferroelectrics, thereby making it energetically favorable for domain walls to form on particular planes that satisfy mechanical compatibility. Historically, domain walls are found analytically, solving for walls with compatible strains within the wall plane. However, analytical solutions do not give any information about relative energetics of nonideal domain walls. Here, the orientation of the most favorable domain walls and the relative energetics of nonideal domain walls are predicted by calculating strain mismatch and charge discontinuity over all possible domain wall orientations. This is done for common ferroelectric phase symmetries of tetragonal, rhombohedral, orthorhombic, and monoclinic type. In tetragonal and rhombohedral symmetry, the domain walls are independent of any external stimulus as long as the symmetry is maintained. In orthorhombic and monoclinic symmetry, the orientation of certain mechanically permissible domain walls changes with temperature and/or electric field as the unit cell distorts, while others do not. Additionally, in monoclinic systems, domain wall planes are shown to exist that are not perfectly permissible but are very close to permissible, thus, these walls were not found by prior analytical methods. The visualization of strain compatibility of all the domain walls makes it easy to see precisely on which planes domain walls are expected or not expected and how the domain walls change their orientation under the effect of external stimulus. Such an analysis can also be used to investigate the relative and changing energetics of nonideal domain walls in systems under thermal, compositional, electrical, and mechanical stimuli. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1111/jace.17555 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 1619 Subjects: – SubjectFull: Domain walls (String models) Type: general – SubjectFull: Ferroelectric crystals Type: general – SubjectFull: Unit cell Type: general – SubjectFull: Electric units Type: general – SubjectFull: Domain walls (Ferromagnetism) Type: general – SubjectFull: Analytical solutions Type: general Titles: – TitleFull: Domain walls in ferroelectrics. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Mantri, Sukriti – PersonEntity: Name: NameFull: Daniels, John IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 00027820 Numbering: – Type: volume Value: 104 – Type: issue Value: 4 Titles: – TitleFull: Journal of the American Ceramic Society Type: main |
| ResultId | 1 |
