(Color online) (a) XRD measurements of PbS and Pb0.990Mn0.010S NCs embedded in glass matrix. The effects associated to the incorporation of Mn2+ ions into PbS NCs are seen as a shift to higher 2θ diffraction angle (right panel) of the (111) peak. Probably, the diffusion is enhanced along this (111) direction.
(Color online) AFM/MFM images of Pb1-x Mn x S NCs embedded in the glass matrix with concentrations of the x = 0.010. In (a) 2D images showing the morphologies of Pb1-x Mn x S NCs; (b) the signal of the magnetic interactions is influenced by the sample topography, the contrast between the South (dark area) and North (bright area) magnetic poles identifies the orientation of total magnetic moment of DMS NCs; (c) 3D images illustrates morphology of Pb1-x Mn x S NCs.
(Color online) The EPR spectra recorded of SNABP:Pb1 − x Mn x S samples for x= 0.003, 0.005, and 0.010.
(Color online) Magnetization as a function of temperature for the SNABP:Pb0.997Mn0.003S magnetic sample (left panel) and for the SNABP:Pb0.990Mn0.010S magnetic sample. Field dependence of magnetization is shown in the insets.
(Color online) temperature dependence on the inverse of susceptibility, recorded at 100 Oe, for SNABP: Pb0.997Mn0.003S and SNABP: Pb0.990Mn0.010S samples. Note the paramagnetic behavior at low temperatures.
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