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VOLUME 83 | ISSUE 2 | PAGE 89
First-order magnetic phase transitions in thin films
J-P. Ader, A. I. Buzdin*
Condensated Matter Theory Group, CPMOH UMR CNRS 5798, Université de Bordeaux, 33405 Talence, Cedex France
*Institut Universitaire de France, Paris, France


PACS: 68.35.Rh, 75.30.Kz
Abstract
Using the simple Landau model we discuss near-surface magnetic effects for thin films. corresponding to first-order phase transitions. The size effects observed in ultrathin ferroelectric films are in agreement with this theoretical interpretation. The presence of a weak external field is also formulated.


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