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Issue 36, 2009
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Ferromagnetism above room temperature in nickel–tetracyanoethylene thin films

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Abstract

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 ∼1 : 2 ratio between Ni and TCNE resulting in Ni(TCNE)x, x ≈ 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.

Graphical abstract: Ferromagnetism above room temperature in nickel–tetracyanoethylene thin films

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Publication details

The article was received on 13 Jan 2009, accepted on 15 Jun 2009 and first published on 17 Jul 2009


Article type: Paper
DOI: 10.1039/B900756C
Citation: J. Mater. Chem., 2009,19, 6610-6615
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    Ferromagnetism above room temperature in nickel–tetracyanoethylene thin films

    P. Bhatt, A. Kanciurzewska, E. Carlegrim, M. Kapilashrami, L. Belova, K. V. Rao and M. Fahlman, J. Mater. Chem., 2009, 19, 6610
    DOI: 10.1039/B900756C

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