The phenomenon of spin crossover has a large impact on the physical properties of a solid material including its colour magnetic moment and electrical resistance some materials also show a structural phase change during the transition several practical applications of spin crossover materials have been demonstrated including display and memory devices electrical and electroluminescent devices and mri contrast agents switchable liquid crystals nanoparticles and thin films of spin . Spin crossovermaterials properties andapplications editedby malcolma halcrow schoolofchemistry university ofleedsuk cwiley ajohnwiley sons ltd publication contents listofcontributors xv preface xvii 1 thedevelopment ofspin crossoverresearch 1 keith s murray 11 introduction 1 12 discreteclustersofscocompounds 4 121 dinuclearfe fe scoclusters 6 122 tri tetra penta andhexa . Spin crossover materials properties and applications wiley the phenomenon of spin crossover has a large impact on the physical properties of a solid material including its colour magnetic moment and electrical resistance some materials also show a structural phase change during the transition. The preparation of spin crossover conductors in which conductivity and light induced excited spin state trapping liesst exhibit synergistic effects is desired multifunctional materials