When a magnetic body is placed in a uniform magnetic field, there is a demagnetizing magnetic field generated inside the nanoparticle which is opposite to the direction of the applied field. We know that the demagnetizing field is given by Hd= N.Ms where N is the demagnetizing factor. In case of spherical body, N is equal to 1/3. So, will it be the same if we consider a spherical magnetic nanoparticle as the spherical body. I want to model the magnetic field around a magnetic nanoparticle of size around 50nm. Please provide some suggestions and ideas about how to approach the problem.
Dear Kakoli,
Answer to this question can get from my colleagues Miloš Davidović ([email protected])
The best regards,
Branislav Vulević
Please refer the following reference as it describe the complete analysis for magnetic nanoparticles:
Considering that such magnetic nanoparticle is purely spherical, quite big in the atomistic scale and also it is uniformly magnetized, you will have N=1/3.
Hi A. A. TImopheev, Thanks for the reply. Now can we consider the magnetic field of a spherical uniform nanoparticle similar to the magnetic field of a uniformly spherical sphere?
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