Direct observation of oxygen induced room temperature ferromagnetism in MoO2 thin films by x-ray magnetic circular dichroism characterizations

Title
Direct observation of oxygen induced room temperature ferromagnetism in MoO2 thin films by x-ray magnetic circular dichroism characterizations
Authors
P. ThakurJ. C. CezarN. B. BrookesR. J. ChoudharyRam PrakashD. M. Phase채근화Ravi Kumar
Keywords
MnO2; Ferromagnetism at RT; NEXAFS; XMCD
Issue Date
2009-02
Publisher
Applied physics letters
Citation
VOL 94, 062501-1-062501-3
Abstract
We report the element specific polarized near edge x-ray absorption fine structure NEXAFS and x-ray magnetic circular dichroism XMCD experiments on well characterized undoped MoO2 thin films that show ferromagnetism at room temperature. The polarization dependent of O K edge NEXAFS spectra indicate a strong hybridization of O 2p-4d Mo orbitals followed by a strong anisotropy in the electronic properties. An unquenched orbital magnetic moment within the O 2p shell is clearly evident from the XMCD O K edge, which is ferromagnetically coupled to the neighboring Mo moments as confirmed by Mo M3,2 edge XMCD experiment.
URI
http://pubs.kist.re.kr/handle/201004/35027
ISSN
0003-6951
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KIST Publication > Article
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