High Quality Magnetic Oxide Thin Films Prepared via Aqueous Solution Processing
| Autor: | Catherine J. Page, Peter Richter, Sri Sai Phani Kanth Arekapudi, Georgeta Salvan, Tobias Rüffer, Dietrich R. T. Zahn, Jana Kalbacova, Michael Hietschold, Steffen Schulze, Paul N. Plassmeyer, N. Johrmann, Heinrich Lang, Manfred Albrecht, Julia Harzdorf |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Aqueous solution Materials science Annealing (metallurgy) General Chemical Engineering Oxide Nanotechnology 02 engineering and technology General Chemistry Coercivity 021001 nanoscience & nanotechnology 01 natural sciences Nanocrystalline material chemistry.chemical_compound chemistry Chemical engineering Ferrimagnetism Remanence 0103 physical sciences Materials Chemistry Thin film 0210 nano-technology |
| Zdroj: | Chemistry of Materials. 28:4917-4927 |
| ISSN: | 1520-5002 0897-4756 |
| Popis: | Recent progress in multiferroic materials and spintronic devices has renewed interest in metal oxide ferromagnetic and ferrimagnetic materials. Here, we report the preparation of thin films of nanocrystalline ferrimagnetic CoFe2O4 (CFO) using an environmentally benign aqueous solution processing route. The evolution of the structural, optical, and magnetic properties as a function of postdeposition annealing temperature is reported. For the highest annealing temperature (800 °C), the remanence, coercivity, and resistivity values are comparable with those of films fabricated by epitaxial growth methods and exceed the quality of CFO nanocrystals prepared by other wet-chemical syntheses. In addition to the ability to make high quality ferrite films, the aqueous solution processing strategy offers great flexibility for tuning film properties by incorporating or substituting additional transition metal ions. |
| Databáze: | OpenAIRE |
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