Hysteresis shift in Fe-filled carbon nanotubes due to γ-Fe
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...
| Authors: | , , , , , , , , , |
|---|---|
| Format: | article |
| Publication Date: | 2002 |
| Country: | España |
| Institution: | Universidad Complutense de Madrid (UCM) |
| Repository: | Docta Complutense |
| Language: | English |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/60113 |
| Online Access: | https://hdl.handle.net/20.500.14352/60113 |
| Access Level: | Open access |
| Keyword: | 538.9 Physics Condensed matter Física de materiales Física del estado sólido 2211 Física del Estado Sólido |
| Summary: | 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. |
|---|