| Autor: |
Mühl, T., Elefant, D., Graff, A., Kozhuharova, R., Leonhardt, A., Mönch, I., Ritschel, M., Simon, P., Groudeva-Zotova, S., Schneider, C. M. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 5/15/2003, Vol. 93 Issue 10, p7894, 3p, 2 Black and White Photographs, 3 Graphs |
| Abstrakt: |
We report on the magnetic properties of Fe-filled multiwalled carbon nanotubes (MWNTs) grown by chemical vapor deposition (CVD) on Si substrates with ferrocene as precursor. The MWNTs are aligned perpendicularly to the substrate plane. X-ray diffraction analyses indicate the presence of both bcc and fcc iron with a relatively strong texture. Magnetometry measurements show a pronounced magnetic anisotropy with the easy axis perpendicular to the substrate plane and parallel to the axis of the aligned MWNTs, respectively. The low-temperature behavior suggests a negligible coupling between the two iron phases. We accessed the magnetic properties of individual Fe-filled MWNTs by electron holography using a transmission electron microscope (TEM). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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