Roy, S. ; Roy, B. ; Chakravorty, D. (1996) Magnetic properties of iron nanoparticles grown in a glass matrix Journal of Applied Physics, 79 (3). pp. 1642-1645. ISSN 0021-8979
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Official URL: http://jap.aip.org/resource/1/japiau/v79/i3/p1642_...
Related URL: http://dx.doi.org/10.1063/1.361008
Abstract
Iron particles of diameters in the range 5.5-8.5 nm have been synthesized within a suitably chosen oxide glass by subjecting the latter to a 3Na+⇄Fe3+ exchange reaction followed by reduction treatment in hydrogen. Magnetic measurements have been carried out over the temperature range 20-300 K. The coercive force increases as the iron particle size is decreased. The maximum value of coercive force corresponding to 0 K (Hc0)~48 Oe is obtained for a specimen having diameter of 6.5 nm. The magnetocrystalline anisotropy constant in the case of nanosized iron particles is estimated to be one order of magnitude higher than that of bulk iron.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Coercive Force; Composite Materials; Glass; Ion Exchange Materials; Magnetic Anisotropy; Particulates; Temperature Dependence |
| ID Code: | 64941 |
| Deposited On: | 15 Oct 2011 12:11 |
| Last Modified: | 15 Oct 2011 12:11 |
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