Hartridge, A. ; Bhattacharya, A. K. ; Majumdar, C. K. ; Das, D. ; Chintalapudi, S. N. (1998) A Mössbauer study of Fe2O3-Cr2O3 nanocrystals dispersed in a silica matrix Journal of Magnetism and Magnetic Materials, 183 (1-2). L1-L4 . ISSN 0304-8853
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S03048...
Related URL: http://dx.doi.org/10.1016/S0304-8853(98)00008-0
Abstract
A series of α-Fe2-xCrxO3 nanocrystals, where 0≤x≤1.66, were produced at room temperature using an inorganic sol-gel approach. Aqueous dispersions of these nanocrystals were used to impregnate amorphous silica matrices and the resulting dried and fired materials were studied using Mössbauer spectroscopy. The spectra of the dried and fired nanocrystals consisted of single doublets which showed that even on firing to 600°C, the nanocrystals retained their superparamagnetic properties, indicating no clustering or agglomeration of the crystallites as occurs in the undispersed material.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Sol-gel; Nanocrystals; Magnetic Properties |
| ID Code: | 33358 |
| Deposited On: | 30 Mar 2011 11:12 |
| Last Modified: | 20 Apr 2011 06:02 |
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