Quantum Entanglement in a Mixed Spin Trimer (1/2,1/2,1) with Non-Conserved Magnetization at Finite Temperatures

A model of a molecular magnet consisting of three magnetic ions with spins (1/2, 1/2, 1) and non-conserved magnetization arising due to the heterogeneity of Lande multipliers. This study aims to explain the properties of quantum entanglement of the states of the system during magnetization (demagnetization) processes at finite temperatures. We show how the presence of inhomogeneous g-factors results in a significant enhancement of quantum entanglement and sometimes the expansion of the temperature range in which the spins (pseudospins) of magnetic ions of the model are in entangled states.