Layered ferromagnets hosting tetraalkylammonium-substituted nitronyl nitroxide free radicals

作者：Coronado Eugenio; Gimenez Saiz Carlos; Gomez Garcia Carlos J; Romero Francisco M^*; Tarazon Ana

来源：Journal of Materials Chemistry, 2008, 18(8): 929-934.

DOI：10.1039/b715739h

This paper describes the structural, magnetic and EPR properties of hybrid organic/inorganic magnets formed by anionic heterometallic oxalato-based layers and cationic nitronyl nitroxide (NN) free radicals of the tetraalkylammonium type. A series of compounds of formula (Bu3NCH2NN)-Bu-n[MCr(ox)(3)] (M=Mn (1), Ni (2), Zn (3)) has been prepared and studied by AC and DC magnetic susceptibility measurements and EPR spectroscopy. Magnetic order with critical temperatures ranging from 5 K to 15 K was confirmed. EPR measurements show that the organic spin carriers interact significantly with the inorganic network.

• 出版日期2008