Magnetization-step studies of antiferromagnetic clusters and single ions: Exchange, anisotropy, and statistics

摘要: A magnetic cluster is a group of ions (“spins”) that interact with each other but which, to good approximation, do not ions. Such clusters are responsible for many the interesting and useful properties large number molecular crystals, dilute materials below percolation concentration. In crystal usually all one type. material, on hand, types present. The magnetization-step (MST) method relatively new form spectroscopy measuring intracluster interactions, mainly exchange constants anisotropy parameters. this also yields relative populations different types. This review focuses principles applications MST small clusters, no more than dozen spins or so. It covers only MSTs from spin in which dominant interaction ...