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Type: Artigo de periódico
Title: An Experimental Study On The Influence Of Planar Anisotropy On The Critical Behavior Of A Fe17dy2 Single Crystal
Author: Coelho A.A.
Gama S.
Mohan Ch.V.
Kronmuller H.
Abstract: In order to check the influence of planar anisotropy on the magnetic phase transition which occurs at the Curie temperature, we have made a detailed experimental study on the critical behavior of a high quality Fe17Dy2 single crystal which has a strong planar anisotropy. This study includes deducing various critical exponents from extensive magnetization measurements. The asymptotic and effective critical exponents and their corresponding amplitudes have been derived from the magnetization data measured with the applied field along the easy plane using the conventional methods to analyze phase transitions with and without the inclusion of the "correction-to-scaling" terms originating from the nonlinear irrelevant scaling fields. Inclusion of the correction-to-scaling terms could only influence the critical amplitude values. The values of the critical exponents obtained in this way are found to be in excellent agreement with those obtained from the magnetization data taken with the applied field parallel to the hard axis, indicating that the planar anisotropy has not influenced the critical behavior. These results are in agreement with the observations made on Fe17Ho2 and Fe17Er2 single crystals. © 1999 American Institute of Physics.
Rights: aberto
Identifier DOI: 
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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