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Phase Transition in Ultrathin Films

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Abstract:

Within the frame of average spin the dependence of Neel temperature of ultrathin antiferromagnetic film for FCC crystalline lattice on its thickness and the concentration of magnetic atoms has been defined. The λ values calculated by us are close to experimental values obtained for the films СoO/SiO2. The increasing of thickness leads to decreasing of the critical concentration down to the value equal to percolation threshold.

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Periodical:

Solid State Phenomena (Volume 215)

Pages:

227-232

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.215.227

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Online since:

April 2014

Authors:

Leonid L. Afremov, Aleksandr A. Petrov*

Keywords:

Concentration Phase Transition, Magnetic Phase Transition, Néel Temperature, Percolation Threshold, Size Effect, Ultrathin Films

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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