Researchers at the Jagiellonian University have developed a new Prussian Blue analogue that exhibits ferrimagnetic ordering at a record-high temperature exceeding 400 K (127 °C). The discovery, reported in the Advanced Science article “Heavy Prussian Blue Analog with Magnetic Ordering above 400 K”, concerns a cyanide-bridged molecular magnet composed of vanadium(II) and molybdenum(III) ions, which replace the traditional iron ions found in the Prussian Blue structure. The experimental work described in the publication was carried out at SOLARIS on the ASTRA beamline.
The study reports the synthesis, structural analysis and magnetic characterisation of the amorphous compound {[K(crypt222)]0.34VII1.37MoIII(CN)6(BF4)0.08·xCH3CN} n(VII–MoIII(CN)6), demonstrating its ferrimagnetic behaviour up to 400 K (127 °C) – a temperature range previously inaccessible for conventional cyanide–bridged magnets.
Read more on the SOLARIS website
Image: A single frame from the video illustrating the behaviour of VII–CrIII(CN)6 in a varying magnetic field between 0 and 0.5 T.