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Hysteresis shift in Fe-filled carbon nanotubes due to γ-Fe

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Prados, C. and Crespo del Arco, Patricia and González, J. M. and Hernando Grande, Antonio and Marcos, J. F. and Gancedo, R. and Grobert, N. and Terrones, M. and Walton, R. M. and Kroto, H. W. (2002) Hysteresis shift in Fe-filled carbon nanotubes due to γ-Fe. Physical review B, 65 (11). ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.65.113405


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Abstract

The phase distribution of high aspect ratio, Fe-filled carbon nanotubes prepared by pyrolyzing a mixture of powered ferrocene and C_(60) has been determined by means of Mössbauer spectroscopy. Our results for that characterization are closely related to the observation, after field cooling processes, of a hysteresis loop shift and clearly suggest a spatial phase distribution which includes the presence of a g-Fe/α-Fe interface. The temperature ependence of the hysteresis loop shift is discussed in terms of localized regions at that interface exhibiting uncompensated antiferromagnetism within reduced dimensions.


Item Type:Article
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©2002 The American Physical Society

Uncontrolled Keywords:Physics; Condensed matter
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:42230
Deposited On:20 Apr 2017 16:22
Last Modified:14 Feb 2018 14:44

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