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

C. Prados; P. Crespo; J. M. González; A. Hernando; J. F. Marco; R. Gancedo; N. Grobert; M. Terrones; R. M. Walton; H. W. Kroto

doi:10.1103/PhysRevB.65.113405

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

C. Prados, P. Crespo, J. M. González, A. Hernando, J. F. Marco, R. Gancedo, N. Grobert, M. Terrones, R. M. Walton, H. W. Kroto

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1 Scopus citations

Abstract

The phase distribution of high aspect ratio, Fe-filled carbon nanotubes prepared by pyrolyzing a mixture of powered ferrocene and (formula presented) 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 γ-Fe/α-Fe interface. The temperature dependence of the hysteresis loop shift is discussed in terms of localized regions at that interface exhibiting uncompensated antiferromagnetism within reduced dimensions.

Original language	English (US)
Pages (from-to)	1-4
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.65.113405
State	Published - 2002

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.65.113405

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title = "Hysteresis shift in Fe-filled carbon nanotubes due to γ-Fe",

abstract = "The phase distribution of high aspect ratio, Fe-filled carbon nanotubes prepared by pyrolyzing a mixture of powered ferrocene and (formula presented) has been determined by means of M{\"o}ssbauer 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 γ-Fe/α-Fe interface. The temperature dependence of the hysteresis loop shift is discussed in terms of localized regions at that interface exhibiting uncompensated antiferromagnetism within reduced dimensions.",

author = "C. Prados and P. Crespo and Gonz{\'a}lez, {J. M.} and A. Hernando and Marco, {J. F.} and R. Gancedo and N. Grobert and M. Terrones and Walton, {R. M.} and Kroto, {H. W.}",

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doi = "10.1103/PhysRevB.65.113405",

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AU - Prados, C.

AU - Crespo, P.

AU - González, J. M.

AU - Hernando, A.

AU - Marco, J. F.

AU - Gancedo, R.

AU - Grobert, N.

AU - Terrones, M.

AU - Walton, R. M.

AU - Kroto, H. W.

PY - 2002

Y1 - 2002

N2 - The phase distribution of high aspect ratio, Fe-filled carbon nanotubes prepared by pyrolyzing a mixture of powered ferrocene and (formula presented) 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 γ-Fe/α-Fe interface. The temperature dependence of the hysteresis loop shift is discussed in terms of localized regions at that interface exhibiting uncompensated antiferromagnetism within reduced dimensions.

AB - The phase distribution of high aspect ratio, Fe-filled carbon nanotubes prepared by pyrolyzing a mixture of powered ferrocene and (formula presented) 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 γ-Fe/α-Fe interface. The temperature dependence of the hysteresis loop shift is discussed in terms of localized regions at that interface exhibiting uncompensated antiferromagnetism within reduced dimensions.

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

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ER -

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

Abstract

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