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

Kemény, Tamás and Kiss, László and Kaptás, Dénes and Balogh, Sára Judit and Bujdosó, László and Gubicza, Jenő and Vincze, Imre (2004) Superparamagnetic behaviour of Fe80B12Zr7Cu alloys with different fractions of primary nanocrystalline phase. In: 11th International Conference on Rapidly Quenched and Metastable Materials (RQ11), 2002. augusztus 25-30., Oxford University, Oxford, England.

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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 Mössbauer 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 Mössbauer spectroscopy than by the macroscopic magnetisation studies, which means that the applied magnetic field significantly influences the superparamagnetic behaviour.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science / természettudomány > QC Physics / fizika
Depositing User: Erika Bilicsi
Date Deposited: 12 Oct 2012 08:00
Last Modified: 12 Oct 2012 08:02
URI: http://real.mtak.hu/id/eprint/3106

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