## EPR of Exchange Coupled SystemsFrom chemistry to solid state physics to biology, the applications of Electron Paramagnetic Resonance (EPR) are relevant to many areas. This unified treatment is based on the spin Hamiltonian approach and makes extensive use of irreducible tensor techniques to analyze systems in which two or more spins are magnetically coupled. This edition contains a new Introduction by coauthor Dante Gatteschi, a pioneer and scholar of molecular magnetism. The first two chapters review the foundations of exchange interactions, followed by examinations of the spectra of pairs and clusters, relaxation in oligonuclear species, approaches to infinite lattices, and how EPR can provide firsthand information on spin dynamics. Subsequent chapters explore experimental data, magnetically coupled systems, low-dimensional materials, and the use of EPR to characterize excitons and exciton motion. More than 200 figures and tables appear throughout the book, which concludes with a pair of helpful appendices. |

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angular dependence angular momentum anisotropic antiferromagnetic antisymmetric atoms axis Bencini calculated Chem cluster coefficients complexes components compounds computed conﬁguration copper ions copper(II corresponding coupling constants deﬁned diamagnetic dimer dinuclear dipolar interaction effective energy levels EPR spectra Equation exchange coupled exchange interaction excited exciton experimental ferredoxins ferromagnetic ﬁrst frequency function g tensor g values Gatteschi ground high spin Inorg iron(III irreducible tensor operators isotropic exchange lattice ligand line width Lorentzian magnetic ﬁeld magnetic orbitals magnetic susceptibility manganese(II metal ions modulation molecular molecules nickel(II nitroxide observed obtained one-dimensional orthogonal oxidation pairs parallel paramagnetic perturbation phonon Phys porphyrin proteins radical reduced matrix relaxation resonance second quantized shown in Fig single crystal single ion singlet species spectrum spin centers spin hamiltonian parameters strong exchange limit symmetry Table TCNQ temperature dependence TMMC total spin transition metal triad triplet unpaired electrons vector X-band yields Zeeman zero ﬁeld splitting