Thin film Co[TCNE]2 and VyCo1−y[TCNE]2 magnetic materials

• Published in: Journal of magnetism and magnetic materials 2012-07, Vol.324 (14), p.2218-2223
• Main Authors: Erickson, Preston K., Miller, Joel S.
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; CVD; Exact sciences and technology; Infrared; Infrared spectroscopy; Joining; Magnetic film; Magnetic materials; Magnetic properties and materials; Magnetic properties of monolayers and thin films; Magnetic properties of surface, thin films and multilayers; Magnetism; Organic-based magnet; Physics; Solvents; Synthesis; Thin films
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2012.02.037

A chemical vapor deposition method has been developed for the synthesis of both solvent-free Co[TCNE]2 and VyCo1−y[TCNE]2 thin films. Both materials have been previously synthesized by solution methods, but contain solvent. The Co[TCNE]2 thin films were characterized by infrared spectroscopy and magnetic studies, and albeit solvent-free were determined to be similar to the analogous solution-prepared samples as they are paramagnetic with slight antiferromagnetic coupling. In contrast to the solution-based synthesis, VyCo1−y-[TCNE]2 showed no dependence of coercive field based on the composition of the films, even though infrared spectroscopic data indicates formation of a solid-solution thin film, and not a physical mixture. ► Solid solution VyCo1−y[TCNE]2 films have been fabricated by chemical vapor deposition. ► Co[TCNE]2 films exhibit paramagnetic behavior with antiferromagnetic coupling. ► VyCo1−y[TCNE]2 films order as ferrimagnets with Tc's exceeding room temperature.