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Ferromagnetism above room temperature in nickel-tetracyanoethylene thin films
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Engineering Material Physics.
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2009 (English)In: Journal of Materials Chemistry, ISSN 0959-9428, E-ISSN 1364-5501, Vol. 19, no 36, 6610-6615 p.Article in journal (Refereed) Published
Abstract [en]

Room temperature ferromagnetic ordering is reported in Ni-tetracyanoethylene (TCNE) thin films fabricated on Au substrates using physical vapor deposition (PVD) under ultra high vacuum conditions. This technique enables the preparation of very clean films without having any kind of contamination from oxygen-containing species, solvents or precursor molecules. Film stoichiometry was obtained from X-ray photoelectron spectroscopy (XPS) measurements. XPS derived stoichiometry points to a similar to 1 : 2 ratio between Ni and TCNE resulting in Ni(TCNE)(x), x approximate to 2. No evidence of pure Ni metal in the in situ grown films was present in the XPS or the ultraviolet photoelectron spectroscopy (UPS) measurements within the detection limits of the techniques.

Place, publisher, year, edition, pages
2009. Vol. 19, no 36, 6610-6615 p.
Keyword [en]
designer magnets, organic magnets, solid-solution
URN: urn:nbn:se:kth:diva-18726DOI: 10.1039/b900756cISI: 000269493600024ScopusID: 2-s2.0-69949121980OAI: diva2:336773
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2010-12-14Bibliographically approved

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Kapilashrami, MukesBelova, Lyubov M.Rao, K. V.
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