|WikiProject Physics||(Rated Start-class, Low-importance)|
- Hmm, the link could point to Boltzmann distribution or statistical mechanics or statistical fluctuations. None is quite perfect. Eventually I think thermal fluctuations deserves its own article, I would write it if I had time... --Steve (talk) 03:36, 27 August 2010 (UTC)
I just found this interesting “topical review”:
- Superparamagnetism, Subhankar Bedanta and Wolfgang Kleemann, J. Phys. D 42, 013001 (2009).
It’s a 28 pages long review article with 171 references and 31 citations. I still did not have time to go through it, but it looks like it may be a good reference for this Wikipedia article.
--Edgar.bonet (talk) 08:11, 20 September 2010 (UTC)
I suggest that the material on Neel relaxation be made into a separate article. It is the basis of so many subjects besides superparamagnetism - for example, it can be used to calculate the lower size limit for single-domain particles, and with a magnetic field it is the basis for thermoremanent magnetization. Two other choices for title would be Neel-Arrhenius relaxation or Neel-Brown relaxation, but I think the simpler choice is best. --RockMagnetist (talk) 18:30, 28 September 2010 (UTC)
- I don't get the lower size limit for single-domain particles. Superparamagnetic particles are single domain. As for the thermoremanent magnetization, it looks to me as being all about the superparamagnetic/blocked transition... --Edgar.bonet (talk) 20:05, 30 September 2010 (UTC)
- I often use "single-domain" to mean stable single-domain. The lower limit is then the size at which the blocking temperature is room temperature. As for thermoremanent magnetization, the SP/blocked transition is the starting point (at least for single-domain particles), but a lot of the applications would not belong on a superparamagnetism page. The stuff about time-dependent susceptibility is also, in my opinion, somewhere between stable single-domain and SP. There are many other applications of the Neel theory, magnetic viscosity being one example. --RockMagnetist (talk) 20:14, 30 September 2010 (UTC)