Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 11, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3360217
Keywords
coercive force; iron compounds; magnetic epitaxial layers; magnetoelectric effects; strontium compounds
Categories
Funding
- Ministerio de Ciencia e Innovacion [MAT2009-08024, CSD2007-00041]
- Office of Basic Energy Sciences, Division of Materials Sciences and Engineering
- U. S. Department of Energy
- SHaRE User Facility
- ICREA Funding Source: Custom
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Thin films of the metastable and elusive epsilon-Fe2O3 have been epitaxially stabilized on SrTiO3 (111) substrates. The epsilon-Fe2O3 films present a (001) orientation perpendicular to the substrate and three in-plane domains measuring a few nanometers and showing atomically sharp interfaces. We argue that this domain structure, rather than the epitaxial-strain, plays an essential role in stabilizing the epsilon-Fe2O3 by minimizing the energy of (100) surfaces. The epsilon-Fe2O3 films show a large in-plane coercivity similar to 8 kOe which combined with the magnetoelectric character claimed for this oxide may lead to novel applications in spintronics.
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