Document Type

Article

Publication Date

7-21-2003

Abstract

Room-temperature ferromagnetism is observed in reduced rutile TiO22d by Fe doping. The epitaxial films grown by pulsed-laser deposition are carefully examined by x-ray diffraction, transmission electron microscopy, and magnetic and transport measurements. The films exhibit the extraordinary Hall-effect and thin-film magnetic shape anisotropy. The magnetic moments and anticipated Curie temperatures of the films rule out Fe particles, iron oxides, and Ti–Fe oxides as possible sources for the observed magnetic signals. The carriers of the Fe-doped reduced rutile are p-type, with a carrier density of 131022/cm3. This room-temperature dilute magnetic semiconductor should find potential applications in spintronics. © 2003 American Institute of Physics.

DOI

10.1063/1.1593825

Comments

Copyright 2003 AIP (American Institute of Physics) Publishing LLC.

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