Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10632039 | Materials Research Bulletin | 2005 | 13 Pages |
Abstract
Nanostructural ferric oxide was encapsulated within one-dimensional (1-D) silicate mesoporous molecular materials, resulting in the formation of nanocomposites. The resulting nanocomposites were characterized by UV-vis, IR, TEM, EPR and X-ray diffraction. The occluded Fe2O3 nanostructures were found to evince optical spectra and magnetic properties that were significantly different from that of bulk Fe2O3. EPR measurements indicate that the various nanocomposites (whose dimensions were controllable by the pore sizes of the silicate materials), when sufficiently loaded with small Fe2O3 nanoparticles, possess nonzero absorptions at zero applied magnetic field, as well as significant microwave absorption capacities as a function of applied magnetic field strength.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Haiquan Guo, Xiaoming Zhang, Min-Hui Cui, Renu Sharma, Nan-Loh Yang, Daniel L. Akins,