Journal
APPLIED PHYSICS LETTERS
Volume 88, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2193431
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We report room temperature ferromagnetism in single crystal Ce1-xCoxO2-delta (x <= 0.05) films deposited on a LaAlO3(001) substrate. Films were grown by a pulsed laser deposition technique and were thoroughly characterized using x-ray diffraction, high-resolution transmission electron microscopy coupled with electron energy loss spectroscopy and scanning transmission electron microscopy-Z contrast, x-ray photoelectron spectroscopy, optical transmission spectroscopy, and magnetic measurements. These films are transparent in the visible regime and exhibit a very high Curie temperature similar to 740-875 K with a giant magnetic moment. Our results indicate that the ferromagnetic property is intrinsic to the CeO2 system and is not a result of any secondary magnetic phase or cluster formation. (c) 2006 American Institute of Physics.
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