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Spin-wave excitations in ribbon-shaped Fe nanoparticles

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Crespo del Arco, Patricia and González, J. M. and Hernando Grande, Antonio and Ynduráin, F. J. (2004) Spin-wave excitations in ribbon-shaped Fe nanoparticles. Physical review B, 69 (1). ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.69.012403


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Abstract

It has been found that in highly anisometric ribbon-shaped Fe particles with nanoscale dimensions that the magnetization decreases with temperature markedly faster than in bulk bcc Fe. This anomalous dependence, which becomes more remarkable as the length-to-cross section ratio increases, arises from the elongated shape of the particles. The analytical approximation performed on the thermal spectrum of magnons, compatible with the sample dimensions, unravels the correlated influences of shape and size on the thermal decreasing rate of magnetization.


Item Type:Article
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©2004 The American Physical Society.

Uncontrolled Keywords:Physics; Condensed Matter
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:42209
Deposited On:20 Apr 2017 14:26
Last Modified:14 Feb 2018 15:09

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