Abstract
Magnetic properties of a diamond chain consisting of spin-1/2 Ising- and Heisenberg-type atoms are investigated using the generalized decoration-iteration technique that removes all the Heisenberg-type atoms from the diamond chain and substitutes these atoms by new effective couplings. Exact results for the magnetization, enthalpy, Gibbs free energy, specific heat, entropy and susceptibility are obtained for zero and nonzero external magnetic field. Numerical results for the ground-state phase diagram are investigated in detail.
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