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The symmetric spin-1/2 Ising-Heisenberg diamond chain with different Land\'e g-factors of Ising and Heisenberg spins is exactly solved by combining the generalized decoration-iteration transformation and transfer-matrix method. The ground state of the system and magnetocaloric effect during the adiabatic (de)magnetization are particularly examined. It is evidenced that the considered mixed-spin diamond chain exhibits an enhanced magnetocaloric effect during the adiabatic (de)magnetization in the vicinity of field-induced phase transitions as well as in the zero-field limit if the frustrated phase constitutes the zero-field ground state, but the cooling efficiency depends on whether the system is macroscopically degenerate in these parameter regions or not.

Magnetocaloric Effect in the Symmetric Spin-1/2 Diamond Chain with Different Landé g - factors of the Ising and Heisenberg Spins