Tailoring magnetic properties of electrodeposited thin films of the molecule-based magnet Cr5.5(CN)12 11.5H2O.

Eugenio Coronado,Francisco M Romero,Juan P Prieto-Ruiz,Helena Prima-Garcia

doi:10.1186/1556-276x-7-232

Eugenio Coronado, Francisco M Romero + Show 2 more

Open Access

https://doi.org/10.1186/1556-276x-7-232

Copy DOI

Abstract

This paper reports on molecular-based magnetic thin films of Prussian blue analogues (PBA) with high critical temperatures composed of mixed-valence chromium cyanides. The thin films of PBA were synthesized by means of electrodeposition technique. Morphology and magnetic study are presented in a function of electrochemical deposition conditions. We present the electrochemical methods as a promising and effective tool for preparing molecular-based magnetic thin films of Prussian blue analogue.

Highlights

The family of Prussian blue analogues (PBA) of general formula CcAa[B(CN)6]bÁnH2O (C, alkali cation; A and B, transition metal ions) are molecule-based materials with interesting magnetic properties
We report on the fabrication and characterization of Prussian blue analogue thin films obtained by electrodeposition, showing this technique as a promising and effective tool for preparing high-quality thin films of this molecule-based magnet with great perspectives in the field of molecular spintronics
An electroactive transparent film is formed in situ by a reaction of the [Cr(H2O)6]2+ species with the hexacyanometalate anion on the surface electrode resulting in the formation of the insoluble PBA

Summary

Background

The family of Prussian blue analogues (PBA) of general formula CcAa[B(CN)6]bÁnH2O (C, alkali cation; A and B, transition metal ions) are molecule-based materials with interesting magnetic properties. Electrochemical methods are intrinsically fast and compatible with patterning and large-scale production [6] with the possibility of working in wet non-vacuum conditions. In this way, electrodeposition is presented as one of the simplest and cheapest processes available for the fabrication of thin films [7] being of great interest in possible industrial applications. We report on the fabrication and characterization of Prussian blue analogue thin films obtained by electrodeposition, showing this technique as a promising and effective tool for preparing high-quality thin films of this molecule-based magnet with great perspectives in the field of molecular spintronics

Methods

Results and discussion

Conclusions