One-dimensional nanoscopic Fe
3
O
4
architectures are grown by molecule-based chemical vapor deposition CVD using [Fe(OBu
t
)
3
]
2
precursor and Au particles as growth templates. Growth of magnetite shell on tin oxide nanowires is also achieved, obtaining magnetic-semiconductor heterostructures. Structural characterization of the different nanostructures and the first electrical measurements on an individual magnetite nanowire are reported.