  A bipartite entanglement between two nearest-neighbor Heisenberg spins of a
spin-1/2 Ising-Heisenberg model on a triangulated Husimi lattice is quantified
using a concurrence. It is shown that the concurrence equals zero in a
classical ferromagnetic and a quantum disordered phase, while it becomes
sizable though unsaturated in a quantum ferromagnetic phase. A
thermally-assisted reentrance of the concurrence is found above a classical
ferromagnetic phase, whereas a quantum ferromagnetic phase displays a striking
cusp of the concurrence at a critical temperature.
