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A phenomenological model for explaining the magnetic properties of MnAs nanocrystals embedded in GaAs is proposed. It is shown that experimental data of DC magnetization as a function of temperature, obtained according to zero-field-cooled and field-cooled protocols, can be understood assuming a transition of the system from a low temperature state in which very slow dynamics is observed (frozen state)...
Pd nanocrystals obtained by the physical vacuum deposition (PVD) method were studied by X-ray diffraction, transmission electron microsocpy (TEM), atomic force microsocpy (AFM) and optical absorption methods. These Pd fcc nanocrystals are embedded in carbonaceous matrix. The object of study was the structure of Pd nanocrystals and interaction between Pd and carbon matrix interface. In the research...
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