金属-自由基分子基铁磁体的设计合成进展

金属一自由基分子基铁磁体的设计和合成，是近年发展起来的新课题，本文介绍这一课题的研究现状与发展趋势。

Design and Synthesis of the Metal-Radical Molecular-Based Magnets

one of the main challenges in the field of molecular materials is the design of molecular basedferromagnets exhibiting a spontaneous magnetication below a critical temperature Tc. The so-called metal-radical approach has been successfully employed in the synthesis of molecular basedferromagnets. It consists in the use of stable organic radicals such as the nitronyl nitroxides, 2-R-4, 4, 5, 5-tetramethyl-4, 5-dihydro-1H-imidazolyl-1-oxyl 3-oxide (NITR) as ligands for transi-tion-metal ions and Gd(Ⅲ) ion, which can thus be connected in infinite structures. The individ-ual metal-radical coupling can be ferro-, ferri-or antiferromagnetic and in this way one-, two- orthree-dimensional ferro- and ferrimagnets were obtained. Here we wish to conclude recentachievements in this area and try to predict the direction of researches.