Phase control of single-crystalline cobalt oxide thin films grown by pulsed laser deposition
- Functional oxides are highly fascinating materials driving much research in chemistry, physics, and materials science. In this study, we have epitaxially grown CoO and Co3O4 thin films on SrTiO3(001) and MgO(001) substrates by pulsed laser deposition. By choosing the right deposition parameters such as substrate temperature and oxygen partial pressure, we are able to control the oxide phase and therefore the oxidation state of the transition metal controlling its physical properties. Structural analysis revealed a cube-on-cube orientation for both oxide phases with respect to the substrates and confirmed that all grown films are single-phase and single-crystalline. In addition, post-annealing in oxygen atmosphere allows to change the cobalt oxide phase from CoO to Co3O4. Furthermore, magnetic measurements indicated a Néel temperature of about 45 K for Co3O4 thin films which is close to the reported bulk value.
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| Author: | Maximilian MihmORCiDGND, Christian HolzmannORCiDGND, Johannes SeydORCiDGND, Aladin UllrichORCiDGND, Helmut KarlORCiDGND, Manfred AlbrechtORCiDGND |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-1253053 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/125305 |
| ISSN: | 0040-6090OPAC |
| Parent Title (English): | Thin Solid Films |
| Publisher: | Elsevier BV |
| Place of publication: | Amsterdam |
| Type: | Article |
| Language: | English |
| Year of first Publication: | 2025 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2025/09/20 |
| Volume: | 827 |
| First Page: | 140776 |
| DOI: | https://doi.org/10.1016/j.tsf.2025.140776 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Experimentalphysik IV | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  CC-BY 4.0: Creative Commons: Namensnennung (mit Print on Demand) |
