Magnetic phase transitions in nanoclusters and nanostructures |
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Authors: | I P Suzdalev |
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Institution: | (1) Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, Moscow, 119991, Russia |
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Abstract: | The review includes theoretical models and experimental results on magnetic phase transitions in magnetic nanoclusters and
nanostructures. It is shown, that nanoclusters with the sizes of a few or tens nanometers possess the critical sizes (similarly
to critical temperatures Curie or Neel), less of which cluster or cluster nanostructure loses magnetic ordering due to the
first order magnetic phase transitions (by the jump). Change of the character of magnetic phase transitions (first-to-second
order), the reduction of Curie or Neel points and the finding of critical sizes of nanoclusters has been observed on ferric
oxides and hydroxides in solid state and matrix nanostructures. |
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Keywords: | |
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