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Superparamagnetic behaviour of Fe80B12Zr7Cu alloys with different fractions of primary nanocrystalline phase

Authors :
L. Bujdosó
Dénes Kaptás
Jenő Gubicza
Judit Balogh
T. Kemény
I. Vincze
L. F. Kiss
Source :
Materials Science and Engineering: A. :219-222
Publication Year :
2004
Publisher :
Elsevier BV, 2004.

Abstract

The superparamagnetic behaviour of nanocrystalline (nc) Fe80B12Zr7Cu alloys, having different amounts of body centred cubic (bcc) fraction controlled by DSC heat treatments was studied by high temperature SQUID magnetometry and Mossbauer spectroscopy. The granule diameter calculated from magnetic measurements is significantly higher than the X-ray determined grain size but is proportional to that value. The superparamagnetic behaviour is observed at substantially lower temperatures by the Mossbauer spectroscopy than by the macroscopic magnetisation studies, which means that the applied magnetic field significantly influences the superparamagnetic behaviour. © 2003 Elsevier B.V. All rights reserved.

Details

ISSN :
09215093
Database :
OpenAIRE
Journal :
Materials Science and Engineering: A
Accession number :
edsair.doi...........338cecf26b8bf353af84f840834ebb14
Full Text :
https://doi.org/10.1016/j.msea.2003.10.101