Ferromagnetism and Morphology of Annealed Fe2O3/CoXOY/ZnO Thin Films

Zolotaryov A, Goetze S, Bachmann J, Goerlitz D, Hesse D, Nielsch K (2011)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2011

Journal

Advanced Engineering Materials Wiley-VCH Verlag

Publisher: Wiley-VCH Verlag

Book Volume: 13

Pages Range: 330-335

DOI: 10.1002/adem.201000271

Abstract

We have studied thermal solid-state reactions in the Fe2O3/CoXOY/ZnO thin film systems grown using the atomic layer deposition technique. The compound produced after annealing at 700 degrees C is found to be a complex mixture of three different spinel phases: ZnCo2O4, CoFe2O4, and ZnFe2O4. The magnetic properties of the compound strongly depend on the atomic ratio of Fe3+ and Co2+ atoms, which can be set by choosing the corresponding thicknesses of the Fe2O3 and CoXOY films. In addition, we also find a formation of 100 nm voids at the interface between Fe-Co-Zn-O compound and remaining ZnO film after 1h annealing at 700 degrees C in argon atmosphere. The formation of these voids shows indirectly the preferential outward diffusion of Zn2+ ions from ZnO into the Fe2CoO4 phase layer what we prove via our magnetic measurements.

Authors with CRIS profile

Julien Bachmann Lehrstuhl für Chemistry of thin film materials

Involved external institutions

Max-Planck-Institut für Mikrostrukturphysik (MSP) / Max Planck Institute for Microstructure Physics DE Germany (DE) Universität Hamburg (UHH) DE Germany (DE)

How to cite

APA:

Zolotaryov, A., Goetze, S., Bachmann, J., Goerlitz, D., Hesse, D., & Nielsch, K. (2011). Ferromagnetism and Morphology of Annealed Fe2O3/CoXOY/ZnO Thin Films. Advanced Engineering Materials, 13, 330-335. https://dx.doi.org/10.1002/adem.201000271

MLA:

Zolotaryov, Andriy, et al. "Ferromagnetism and Morphology of Annealed Fe2O3/CoXOY/ZnO Thin Films." Advanced Engineering Materials 13 (2011): 330-335.

BibTeX: Download