Uniaxial magnetic anisotropy energy of fe wires embedded in carbon nanotubes

Francisco Muñoz, Jose Mejía-López, Tomas Pérez-Acle, Aldo H. Romero

Resultado de la investigación: Article

8 Citas (Scopus)

Resumen

In this work, we analyze the magnetic anisotropy energy (MAE) of Fe cylinders embedded within zigzag carbon nanotubes, by means of ab initio calculations. To see the influence of the confinement, we fix the Fe cylinder diameter and we follow the changes of the MAE as a function of the diameter of the nanotube, which contains the Fe cylinder. We find that the easy axis changes from parallel to perpendicular, with respect to the cylinder axis. The orientation change depends quite strongly on the confinement, which indicates a nontrivial dependence of the magnetization direction as function of the nanotube diameter. We also find that the MAE is affected by where the Fe cylinder sits with respect to the carbon nanotube, and the coupling between these two structures could also dominate the magnetic response. We analyze the thermal stability of the magnetization orientation of the Fe cylinder close to room temperature.

Idioma originalEnglish
Páginas (desde-hasta)2883-2891
Número de páginas9
PublicaciónACS Nano
Volumen4
N.º5
DOI
EstadoPublished - 25 may 2010

Huella dactilar

Carbon Nanotubes
Magnetic anisotropy
Carbon nanotubes
carbon nanotubes
wire
Wire
Nanotubes
anisotropy
Magnetization
energy
nanotubes
Thermodynamic stability
magnetization
fixing
thermal stability
Temperature
room temperature

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

Citar esto

Muñoz, F., Mejía-López, J., Pérez-Acle, T., & Romero, A. H. (2010). Uniaxial magnetic anisotropy energy of fe wires embedded in carbon nanotubes. ACS Nano, 4(5), 2883-2891. https://doi.org/10.1021/nn901834z
Muñoz, Francisco ; Mejía-López, Jose ; Pérez-Acle, Tomas ; Romero, Aldo H. / Uniaxial magnetic anisotropy energy of fe wires embedded in carbon nanotubes. En: ACS Nano. 2010 ; Vol. 4, N.º 5. pp. 2883-2891.
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Muñoz, F, Mejía-López, J, Pérez-Acle, T & Romero, AH 2010, 'Uniaxial magnetic anisotropy energy of fe wires embedded in carbon nanotubes', ACS Nano, vol. 4, n.º 5, pp. 2883-2891. https://doi.org/10.1021/nn901834z

Uniaxial magnetic anisotropy energy of fe wires embedded in carbon nanotubes. / Muñoz, Francisco; Mejía-López, Jose; Pérez-Acle, Tomas; Romero, Aldo H.

En: ACS Nano, Vol. 4, N.º 5, 25.05.2010, p. 2883-2891.

Resultado de la investigación: Article

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T1 - Uniaxial magnetic anisotropy energy of fe wires embedded in carbon nanotubes

AU - Muñoz, Francisco

AU - Mejía-López, Jose

AU - Pérez-Acle, Tomas

AU - Romero, Aldo H.

PY - 2010/5/25

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N2 - In this work, we analyze the magnetic anisotropy energy (MAE) of Fe cylinders embedded within zigzag carbon nanotubes, by means of ab initio calculations. To see the influence of the confinement, we fix the Fe cylinder diameter and we follow the changes of the MAE as a function of the diameter of the nanotube, which contains the Fe cylinder. We find that the easy axis changes from parallel to perpendicular, with respect to the cylinder axis. The orientation change depends quite strongly on the confinement, which indicates a nontrivial dependence of the magnetization direction as function of the nanotube diameter. We also find that the MAE is affected by where the Fe cylinder sits with respect to the carbon nanotube, and the coupling between these two structures could also dominate the magnetic response. We analyze the thermal stability of the magnetization orientation of the Fe cylinder close to room temperature.

AB - In this work, we analyze the magnetic anisotropy energy (MAE) of Fe cylinders embedded within zigzag carbon nanotubes, by means of ab initio calculations. To see the influence of the confinement, we fix the Fe cylinder diameter and we follow the changes of the MAE as a function of the diameter of the nanotube, which contains the Fe cylinder. We find that the easy axis changes from parallel to perpendicular, with respect to the cylinder axis. The orientation change depends quite strongly on the confinement, which indicates a nontrivial dependence of the magnetization direction as function of the nanotube diameter. We also find that the MAE is affected by where the Fe cylinder sits with respect to the carbon nanotube, and the coupling between these two structures could also dominate the magnetic response. We analyze the thermal stability of the magnetization orientation of the Fe cylinder close to room temperature.

KW - Carbon nanotubes

KW - Encapsulated metal nanowires

KW - Magnetic arrangement

KW - Magneto-anisotropy

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Muñoz F, Mejía-López J, Pérez-Acle T, Romero AH. Uniaxial magnetic anisotropy energy of fe wires embedded in carbon nanotubes. ACS Nano. 2010 may 25;4(5):2883-2891. https://doi.org/10.1021/nn901834z