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From

Order Parameter Profiles near Surfaces of Super-weak Ferrimagnetic Materials Exhibiting a Paramagnetic-Ferrimagnetic Transition

A. Waddahou, M. Chahid, A. Maârouf

International Journal of Physics. 2018, 6(5), 147-154 doi:10.12691/ijp-6-5-2
  • Figure 1. Schematic magnetization profiles near a free surface, according to the model which is of Ginzburg-Landau type. (a) Extrapolation length λs>0 (ordinary transition). (b) Extrapolation length λs=∞ (special transition). (c) Extrapolation length λs<0, (T<Tc) (surface transition). (d) Extrapolation length λs<0, (T<Tc) (extraordinary transition)