| dc.creator | Matos, Angela Luis | |
| dc.creator | Fonseca, Luis (Consejero) | |
| dc.date | 2015-12-08T20:42:23Z | |
| dc.date | 2015-12-08T20:42:23Z | |
| dc.date | 2015-12-08T20:42:23Z | |
| dc.date.accessioned | 2017-03-17T16:54:47Z | |
| dc.date.available | 2017-03-17T16:54:47Z | |
| dc.identifier | http://hdl.handle.net/10586 /566 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/647678 | |
| dc.description | Magnetic nanowires displaying ferromagnetic properties have received tremendous scientific
attention owing to their potential applications for magnetic storage and spintronic
nanodevices. Room temperature ferromagnetic semiconducting Fe1-xMnxSi
nanowires were synthesized from a multiple source precursors (MSPs) over silicon substrate
by Chemical Vapor Deposition (CVD) without the use of a catalyst. Scanning
electron microscope (SEM) images showed high density of as grown nanowires with
slightly rough surfaces with diameters between 50 and 200 nm and tens of micrometers
in length. X-rays diffraction (XRD) and selected area electron diffraction (SAED)
patterns showed high quality crystalline order of Fe1-xMnxSi nanowires that can be
ascribed to the cubic B20 crystal structure. The presence of Mn ions in Fe1-xMnxSi
was confirmed by energy-dispersive X-ray spectroscopy (EDS). Characteristic ferromagnetic
hysteresis loops were obtained by Vibrating Sample Magnetometry (VSM).
Besides, to confirm the ferromagnetism in the nanowires Magnetic Force Microscopy
(MFM) was used to scan the magnetic domains in the nanowires. The electrical
resistance of single nanowires was obtained from the slopes of I-V curves measured
with specialized four-probes microdevices. The calculated resistivity is consistent
with previous reported values and the temperature dependence of the conductivity
shows thermal activation which is attributed to the semiconductor properties of the
material. | |
| dc.language | en | |
| dc.subject | Magnetic nanowires | |
| dc.subject | Spintronics | |
| dc.subject | Magnetic Domain | |
| dc.subject | Nanocoires | |
| dc.subject | Silicide | |
| dc.subject | Vibrating Sample Magnetometry (VSM) | |
| dc.subject | 4-Point probe | |
| dc.subject | MFM | |
| dc.subject | Ferromagnetic | |
| dc.title | Electric and Magnetic Properties of Iron Manganese Silicide Nanowires | |
| dc.type | Tesis | |
