We thank the IISc Nanoinitiative for use of the Technai TEM instrument and N. R. Selvi of JNCASR for FESEM measurements. U.M. thanks JNCASR for a Summer Research Fellowship.
Hollow Spheres to Nanocups: Tuning the Morphology and Magnetic Properties of Single-Crystalline α-Fe2O3 Nanostructures†
Article first published online: 29 AUG 2008
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 47, Issue 40, pages 7685–7688, September 22, 2008
How to Cite
Jagadeesan, D., Mansoori, U., Mandal, P., Sundaresan, A. and Eswaramoorthy, M. (2008), Hollow Spheres to Nanocups: Tuning the Morphology and Magnetic Properties of Single-Crystalline α-Fe2O3 Nanostructures. Angew. Chem. Int. Ed., 47: 7685–7688. doi: 10.1002/anie.200802626
- Issue published online: 22 SEP 2008
- Article first published online: 29 AUG 2008
- Manuscript Revised: 8 JUL 2008
- Manuscript Received: 4 JUN 2008
- crystal engineering;
- magnetic properties;
- template synthesis
A bottom-up approach has been used to tune the morphology of single-crystalline hematite from hollow spheres to nanocups. The mechanism involves the formation of nanocups through buckling of the spheres, similar to a deflated ball (see picture). As the shape changes, there is a drastic change in magnetic properties.