Review Article
Magnetic Nanoparticles: A Subject for Both Fundamental Research and Applications
Figure 11
(a) Calculated spin configuration at for a cross-section of a NiFe2O4 particle with diameter 2.5 nm. Circles indicate extremely canted orientations. Reproduced with permission from Kodama et al. [92] © 1996, APS. (b) Temperature dependence of and (solid and open symbols, resp.) of NiO particles with mean diameter 6.5 nm under an field of Oe, measured at frequencies with peaking at K as . The inset shows the high temperature region with peaking at K. Reproduced with permission from Winkler et al. [95] © 2008, IOP Publishing.