Roy, S. ; Das, D. ; Chakravorty, D. ; Agrawal, D. C. (1993) Magnetic properties of glass-metal nanocomposites prepared by the sol-gel route and hot pressing Journal of Applied Physics, 74 (7). pp. 4746-4749. ISSN 0021-8979
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Official URL: http://jap.aip.org/resource/1/japiau/v74/i7/p4746_...
Related URL: http://dx.doi.org/10.1063/1.354344
Abstract
Glass-metal nanocomposite powders in the systems Fe/SiO2 and Ni/SiO2 have been prepared by the sol-gel technique followed by reduction treatment. Bulk nanocomposites are then fabricated by hot pressing these powders. The metal particle diameters range from 8.9 to 14.8 nm. The materials show enhanced coercivities, e.g., a maximum of 82 Oe in the case of Ni/SiO2 and a maximum of 474 Oe in the case of Fe/SiO2 systems. The Mössbauer spectra of Fe/SiO2 samples are comprised of a ferromagnetic component superposed on a superparamagnetic doublet.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Composite Materials; Magnetic Properties; Powders; Iron; Silicon Oxides; Nickel; Moessbauer Effect; Coercive Force; Sol-gel Process; Metallic Glasses |
| ID Code: | 64926 |
| Deposited On: | 15 Oct 2011 12:09 |
| Last Modified: | 15 Oct 2011 12:09 |
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