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Effect of weak dipolar interaction on the magnetic properties of Ni nanoparticles assembly analyzed with different protocols
- Source :
- Journal of Applied Physics. 109:07B521
- Publication Year :
- 2011
- Publisher :
- AIP Publishing, 2011.
-
Abstract
- The effect of weak dipolar interactions (DIs) between Ni nanoparticles (NPs) in samples with different Ni concentrations was investigated by performing a detailed characterization of their structural and magnetic properties. From the determination of several physical parameters of Ni NP assemblies, it was found that the ac and dc magnetic susceptibility measurements are valuable for identifying the DIs between NPs while hysteresis loops measurements showed to be very insensitive, provided that the strength of the DI field is much smaller than the maximum coercive field. Therefore, the sensitivity of the observed static and dynamical magnetic properties to the effect of weak DI depends on the measurement protocols used.
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 109
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........e784199808023312da4861e989f7f463
- Full Text :
- https://doi.org/10.1063/1.3556767