This title appears in the Scientific Report :
2020
Please use the identifier:
http://hdl.handle.net/2128/25793 in citations.
Please use the identifier: http://dx.doi.org/10.1111/jace.16937 in citations.
Observation of oxygen pyramid tilting induced polarization rotation in strained BiFeO3 thin film
Observation of oxygen pyramid tilting induced polarization rotation in strained BiFeO3 thin film
Oxygen octahedral tilting has been recognized to strongly interact with spin, charge, orbital, and lattice degrees of freedom in perovskite oxides. Here, we observe a strain‐driven stripe‐like morphology of two supertetragonal (monoclinic Cc and Cm) phases in the strained BiFeO3/LaAlO3 thin films. T...
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Personal Name(s): | Song, Dongsheng |
---|---|
Liu, Heng‐Jui / Kovács, András / Dunin‐Borkowski, Rafal E. / Chu, Ying‐Hao / Zhu, Jing (Corresponding author) | |
Contributing Institute: |
Physik Nanoskaliger Systeme; ER-C-1 |
Published in: | Journal of the American Ceramic Society, 103 (2020) 4, S. 2828 - 2834 |
Imprint: |
Westerville, Ohio
Soc.
2020
|
DOI: |
10.1111/jace.16937 |
Document Type: |
Journal Article |
Research Program: |
Imaging Magnetism in Nanostructures using Electron Holography Controlling Configuration-Based Phenomena |
Link: |
Get full text Published on 2019-11-29. Available in OpenAccess from 2020-11-29. Get full text Published on 2019-11-29. Available in OpenAccess from 2020-11-29. |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1111/jace.16937 in citations.
Oxygen octahedral tilting has been recognized to strongly interact with spin, charge, orbital, and lattice degrees of freedom in perovskite oxides. Here, we observe a strain‐driven stripe‐like morphology of two supertetragonal (monoclinic Cc and Cm) phases in the strained BiFeO3/LaAlO3 thin films. The two supertetragonal phases have a similar giant axial ratio but differences in oxygen pyramid tilting mode. Especially, the competition between polar instability and oxygen pyramid tilting is identified using atomically resolved scanning transmission electron microscopy, leading to the polarization rotation across the phase boundary. In addition, microtwins are observed in the Cc phase. Our findings provide new insights of the coupling between ferroelectric polarization and oxygen pyramid tilting in oxide thin films and will help to design novel phase morphology with desirable ferroelectric polarization and properties for new applications in perovskite oxides. |