Paramagnetism enhancement by in situ electrochemical hole doping into a Prussian Blue thin film. (20th March 2018) - Noguchi, Mariko
Abstract : Electrochemical hole-doping into a Prussian Blue film enabled remarkable paramagnetism enhancement accompanied with quasi-reversible electrochromism. Abstract : A Prussian Blue (PB) film formed on an indium tin oxide substrate was incorporated in an electrolysis cell with an ionic-liquid midlayer ( N, N -diethyl- N -methyl- N -(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)imide) as an electrolyte. The ionic-liquid electrolysis cell mounted on a SQUID magnetometer was examined under DC bias voltage up to 4.0 V by injecting the charge carriers electrochemically into the PB film. Electrochemical hole doping increased the Fe III /Fe II ratio in the PB film, resulting in a remarkable enhancement of magnetization accompanied by quasi-reversible electrochromism.