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Issue 30, 2014
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Thin films of organic-based magnetic materials of vanadium and cobalt tetracyanoethylene by molecular layer deposition

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Abstract

Thin films of Co[TCNE]x and CoxVy[TCNE]z were grown by molecular layer deposition (MLD). Metallic cobalt (Co0) was observed in the Co[TCNE]x film which contributes to the magnetism showing a coercivity of 450 Oe at 5 K with magnetic ordering temperature above 300 K. A thin film of CoxVy[TCNE]z showed magnetic ordering temperature up to 300 K with a coercivity of 50 Oe at 5 K and 30 Oe at 300 K. The film growth was monitored using a quartz crystal microbalance (QCM), and chemical compositions were characterized by X-ray photoelectron microscopy (XPS). Compared to materials previously synthesized from solution and chemical vapor deposition (CVD) methods, thin films made in this work are smooth and pinhole-free that can be beneficial for the development of thin film devices. The chemical composition of MLD-made films and the presence of Co islands are also shown here.

Graphical abstract: Thin films of organic-based magnetic materials of vanadium and cobalt tetracyanoethylene by molecular layer deposition

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Publication details

The article was received on 02 Apr 2014, accepted on 28 May 2014 and first published on 30 Jun 2014


Article type: Paper
DOI: 10.1039/C4TC00673A
Citation: J. Mater. Chem. C, 2014,2, 6171-6176
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    Thin films of organic-based magnetic materials of vanadium and cobalt tetracyanoethylene by molecular layer deposition

    C. Kao, B. Li, Y. Lu, J. Yoo and A. J. Epstein, J. Mater. Chem. C, 2014, 2, 6171
    DOI: 10.1039/C4TC00673A

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