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Fe-doped In_2O_3 dilute magnetic semiconducting nanowires are fabricated on Au-deposited Si substrates by the chemical vapor deposition technique.It is confirmed by energy dispersive x-ray spectroscopy(EDS),x-ray photoelectron spectroscopy(XPS) and Raman spectroscopy that Fe has been successfully doped into lattices of In_2O_3 nanowires.The EDS measurements reveal a large amount of oxygen vacancies existing in the Fe-doped In_2O_3 nanowires.The Fe dopant exists as a mixture of Fe~(2+) and Fe~(3+),as revealed by the XPS.The origin of room-temperature ferromagnetism in Fe-doped In_2O_3 nanowires is explained by the bound magnetic poJaron model.
Fe-doped In_2O_3 dilute magnetic semiconducting nanowires are fabricated on Au-deposited Si substrates by the chemical vapor deposition technique. It is confirmed by energy dispersive x-ray spectroscopy (EDS), x-ray photoelectron spectroscopy (XPS) and Raman spectroscopy that Fe has been successfully added into lattices of In 2 O 3 nanowires. The EDS measurements reveal a large amount of oxygen vacancies existing in the Fe-doped In 2 O 3 nanowires. The Fe dopant exists as a mixture of Fe 2+ and Fe 3+ , as revealed by the XPS. The origin of room-temperature ferromagnetism in Fe-doped In 2 O 3 nanowires is explained by the bound magnetic poJaron model.