Mukadam, M. D. ; Yusuf, S. M. ; Sharma, P. ; Kulshreshtha, S. K. (2004) Particle size-dependent magnetic properties of γ-Fe2O3 nanoparticles Journal of Magnetism and Magnetic Materials, 272-76 . pp. 1401-1403. ISSN 0304-8853
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.jmmm.2003.12.139
Abstract
The effect of particle size on the magnetic properties of nano-crystalline powders of γ-Fe2O3 has been studied, using a DC magnetization technique, as a function of temperature and magnetic field. A superparamagnetic-type blocking process is observed in the ZFC and FC magnetization. Coercivity increases with increasing particle size, while the saturation magnetization decreases with increasing particle size. Such anomalous behaviour can be explained in terms of the redistribution of Fe3+ ions, depending on the particle size.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Nanoparticle; Superparamagnetism; Magnetization Measurement; Coercivity; Maghemite |
| ID Code: | 112379 |
| Deposited On: | 01 Dec 2017 12:00 |
| Last Modified: | 01 Dec 2017 12:00 |
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