Cyanide-Bridged CrIII–NiII Superparamagnetic Nanoparticles


  • The authors are grateful to Prof. F. Lloret (Inorganic Chemistry Department, Valencia University, Spain) who carried out part of the magnetic measurements. The authors thank the ESF (Programme Molecular Magnets), the European Union (TMR network “Molecules as Nanomagnets” HPRN-CT-1999-00012).


Using reverse micelles as nanoreactors facilitates the preparation of bimetallic CrIII–NiII cyanide-bridged nanoparticles that behave as superparamagnets with a blocking temperature of 5.5 K. The Figure presents a plot of magnetization vs. field for various temperatures. Redispersion in an organic solution allows the particles to be diluted in a polymer matrix (inset of Figure) leading to a shift of the blocking temperature down to 2 K.