Study of the ground state and thermodynamic properties of Cu5-NIPA-like molecular nanomagnets

Abstract

The thermodynamic properties of a spatially anisotropic spin-1/2 Heisenberg model for a Cu${}_5$ pentameric molecule is studied through exact diagonalization. The elementary geometry of the finite lattice is defined on nanomolecules consisting of an hourglass structure of two corner-sharing scalene triangles which are related by inversion symmetry. This microscopic magnetic model is quite suitable to describe the molecular nanomagnetic compound Cu5-NIPA. The ground-state phase diagram, as well as the corresponding total magnetization, are obtained as a function of the anisotropic exchange interactions and the external magnetic field. The thermodynamic behavior of the model at finite temperatures is also studied and the corresponding magnetocaloric effects are analyzed for various values of the Hamiltonian parameters.

10 pages, 12 figures

References in corpus (2)

• Magnetocaloric properties of V6 molecular magnet
• Ground state and thermodynamic properties of spin-1/2 isosceles Heisenberg triangles for V${}_6$-like magnetic molecules

Cited by in corpus (3)

• Magnetocaloric effect in ${\mathrm{Cu}}_3$-type compounds using the Heisenberg antiferromagnetic model in a triangular ring
• Thermodynamic and magnetocaloric properties of a triangular spin-1/2 cluster with Dzyaloshinskii-Moriya interaction
• Quantum machines using ${\mathrm{Cu}}_3$-like compounds modeled by Heisenberg antiferromagnetic in a triangular ring