Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1532191 | Materials Science and Engineering: B | 2006 | 5 Pages |
Abstract
Self-organized pyramidal islands of ferrimagnetic spinel CoCr2O4 were epitaxially grown on MgAl2O4 (0Â 0Â 1). The surfaces of the islands are {1Â 1Â 1} facets, so they can be considered as true three-dimensional objects. Important characteristics of the structures can be tuned by varying growth parameters. Pyramids form above a critical thickness, and the existing granular-like underlying film grow later at a reduced rate. We discuss on the growth mechanism of pyramids and we end comparing the CoCr2O4 pyramids with the widely investigated Si-Ge dots.
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Authors
U. Lüders, F. Sánchez, J. Fontcuberta,