Exploring the Spatial Control of Topotactic Phase Transitions Using Vertically Oriented Epitaxial Interfaces
Abstract Engineering oxygen vacancy formation and distribution is a powerful route for controlling the oxygen sublattice evolution that affects diverse functional behavior. The controlling of the oxygen vacancy formation process is particularly important for inducing topotactic phase transitions tha...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-12-01
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| Series: | Nano-Micro Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40820-021-00752-x |
| _version_ | 1818833964922568704 |
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| author | Wenrui Zhang Jie Zhang Shaobo Cheng Christopher M. Rouleau Kim Kisslinger Lihua Zhang Yimei Zhu Thomas Z. Ward Gyula Eres |
| author_facet | Wenrui Zhang Jie Zhang Shaobo Cheng Christopher M. Rouleau Kim Kisslinger Lihua Zhang Yimei Zhu Thomas Z. Ward Gyula Eres |
| author_sort | Wenrui Zhang |
| collection | DOAJ |
| description | Abstract Engineering oxygen vacancy formation and distribution is a powerful route for controlling the oxygen sublattice evolution that affects diverse functional behavior. The controlling of the oxygen vacancy formation process is particularly important for inducing topotactic phase transitions that occur by transformation of the oxygen sublattice. Here we demonstrate an epitaxial nanocomposite approach for exploring the spatial control of topotactic phase transition from a pristine perovskite phase to an oxygen vacancy-ordered brownmillerite (BM) phase in a model oxide La0.7Sr0.3MnO3 (LSMO). Incorporating a minority phase NiO in LSMO films creates ultrahigh density of vertically aligned epitaxial interfaces that strongly influence the oxygen vacancy formation and distribution in LSMO. Combined structural characterizations reveal strong interactions between NiO and LSMO across the epitaxial interfaces leading to a topotactic phase transition in LSMO accompanied by significant morphology evolution in NiO. Using the NiO nominal ratio as a single control parameter, we obtain intermediate topotactic nanostructures with distinct distribution of the transformed LSMO-BM phase, which enables systematic tuning of magnetic and electrical transport properties. The use of self-assembled heterostructure interfaces by the epitaxial nanocomposite platform enables more versatile design of topotactic phase structures and correlated functionalities that are sensitive to oxygen vacancies. |
| first_indexed | 2024-12-19T02:27:18Z |
| format | Article |
| id | doaj.art-368b39dbd6d743499f1e822b996c9160 |
| institution | Directory Open Access Journal |
| issn | 2311-6706 2150-5551 |
| language | English |
| last_indexed | 2024-12-19T02:27:18Z |
| publishDate | 2021-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nano-Micro Letters |
| spelling | doaj.art-368b39dbd6d743499f1e822b996c91602022-12-21T20:39:53ZengSpringerOpenNano-Micro Letters2311-67062150-55512021-12-0114111210.1007/s40820-021-00752-xExploring the Spatial Control of Topotactic Phase Transitions Using Vertically Oriented Epitaxial InterfacesWenrui Zhang0Jie Zhang1Shaobo Cheng2Christopher M. Rouleau3Kim Kisslinger4Lihua Zhang5Yimei Zhu6Thomas Z. Ward7Gyula Eres8Materials Science and Technology Division, Oak Ridge National LaboratoryMaterials Science and Technology Division, Oak Ridge National LaboratoryCondensed Matter Physics and Materials Science, Brookhaven National LaboratoryCenter for Nanophase Materials Sciences, Oak Ridge National LaboratoryCenter for Functional Nanomaterials, Brookhaven National LaboratoryCenter for Functional Nanomaterials, Brookhaven National LaboratoryCondensed Matter Physics and Materials Science, Brookhaven National LaboratoryMaterials Science and Technology Division, Oak Ridge National LaboratoryMaterials Science and Technology Division, Oak Ridge National LaboratoryAbstract Engineering oxygen vacancy formation and distribution is a powerful route for controlling the oxygen sublattice evolution that affects diverse functional behavior. The controlling of the oxygen vacancy formation process is particularly important for inducing topotactic phase transitions that occur by transformation of the oxygen sublattice. Here we demonstrate an epitaxial nanocomposite approach for exploring the spatial control of topotactic phase transition from a pristine perovskite phase to an oxygen vacancy-ordered brownmillerite (BM) phase in a model oxide La0.7Sr0.3MnO3 (LSMO). Incorporating a minority phase NiO in LSMO films creates ultrahigh density of vertically aligned epitaxial interfaces that strongly influence the oxygen vacancy formation and distribution in LSMO. Combined structural characterizations reveal strong interactions between NiO and LSMO across the epitaxial interfaces leading to a topotactic phase transition in LSMO accompanied by significant morphology evolution in NiO. Using the NiO nominal ratio as a single control parameter, we obtain intermediate topotactic nanostructures with distinct distribution of the transformed LSMO-BM phase, which enables systematic tuning of magnetic and electrical transport properties. The use of self-assembled heterostructure interfaces by the epitaxial nanocomposite platform enables more versatile design of topotactic phase structures and correlated functionalities that are sensitive to oxygen vacancies.https://doi.org/10.1007/s40820-021-00752-xEpitaxial interfaceNanocompositeFunctional oxidesOxygen vacancyTopotactic phase transition |
| spellingShingle | Wenrui Zhang Jie Zhang Shaobo Cheng Christopher M. Rouleau Kim Kisslinger Lihua Zhang Yimei Zhu Thomas Z. Ward Gyula Eres Exploring the Spatial Control of Topotactic Phase Transitions Using Vertically Oriented Epitaxial Interfaces Nano-Micro Letters Epitaxial interface Nanocomposite Functional oxides Oxygen vacancy Topotactic phase transition |
| title | Exploring the Spatial Control of Topotactic Phase Transitions Using Vertically Oriented Epitaxial Interfaces |
| title_full | Exploring the Spatial Control of Topotactic Phase Transitions Using Vertically Oriented Epitaxial Interfaces |
| title_fullStr | Exploring the Spatial Control of Topotactic Phase Transitions Using Vertically Oriented Epitaxial Interfaces |
| title_full_unstemmed | Exploring the Spatial Control of Topotactic Phase Transitions Using Vertically Oriented Epitaxial Interfaces |
| title_short | Exploring the Spatial Control of Topotactic Phase Transitions Using Vertically Oriented Epitaxial Interfaces |
| title_sort | exploring the spatial control of topotactic phase transitions using vertically oriented epitaxial interfaces |
| topic | Epitaxial interface Nanocomposite Functional oxides Oxygen vacancy Topotactic phase transition |
| url | https://doi.org/10.1007/s40820-021-00752-x |
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