Magnetic anisotropy induced by high energy ball milling of Fe 2 MnAl

The effect of disorder and magnetic properties of nanosized Fe 2 MnAl Heusler alloy has been studied using a combination of x-ray diffraction, F 57 e Mössbauer spectroscopy, and dc magnetization. X-ray diffraction spectrum of as-milled sample shows texturing in (400) plane. Mössbauer and dc magnetiz...

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Bibliographic Details
Published in:Journal of applied physics 2009-02, Vol.105 (7), p.07A309-07A309-3
Main Authors: Vinesh, A., Bhargava, Hina, Lakshmi, N., Venugopalan, K.
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Summary:The effect of disorder and magnetic properties of nanosized Fe 2 MnAl Heusler alloy has been studied using a combination of x-ray diffraction, F 57 e Mössbauer spectroscopy, and dc magnetization. X-ray diffraction spectrum of as-milled sample shows texturing in (400) plane. Mössbauer and dc magnetization studies of milled sample show direction dependent magnetic properties. Hysteresis loop at room temperature taken after the field cooling shows a horizontal shift evidencing the presence of exchange bias. This is attributed to core-shell ferromagnetic-antiferromagnetic coupling within nanoparticles of the same material.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3063676