Magnetization steps in the molecular magnet Ni${}_4$Mo${}_{12}$ revealed by complex exchange bridges

Abstract

We study the behavior of the magnetization and the magnetic susceptibility of molecular magnets with complex bridging structure. Our computations are based on a post-Hartree-Fock method accounting for the intricate network of interatomic bonds and an effective spin-like Hamiltonian that captures the essential magnetic features of magnetic molecules. The devised method and the constructed Hamiltonian are further employed to characterize the magnetic properties of the molecular magnet Ni${}_4$Mo${}_{12}$. The obtained results reproduce both quantitatively and qualitatively the main features of the magnetic spectrum. Furthermore, the computations for the magnetization and the low-field susceptibility are in very good agreement with their experimental counterparts. In this respect, they improve upon the results obtained with conventional Heisenberg models.

References in corpus (16)

• Spin Waves and Magnetic Exchange Interactions in CaFe2As2
• Exchange couplings in the magnetic molecular cluster Mn12Ac
• First-principles modelling of magnetic excitations in Mn12
• Discrete antiferromagnetic spin-wave excitations in the giant ferric wheel Fe18
• Single-ion and exchange anisotropy effects and multiferroic behavior in high-symmetry tetramer single molecule magnets
• Magnetic Exchange Interactions in the Molecular Nanomagnet Mn${}_{12}$
• Theory of high-symmetry tetramer single molecule magnets
• Observation of field-dependent magnetic parameters in the magnetic molecule {Ni4Mo12}
• Dynamics at T -> 0 in the half-integer isotropic high spin molecules
• Inelastic neutron scattering study and Hubbard model description of the antiferromagnetic tetrahedral molecule Ni4Mo12
• Magnetic and neutron spectroscopic properties of the tetrameric nickel compound $[M{o}_{12}{O}_{28}({\mu }_2-OH{)}_9({\mu }_3-OH{)}_3{Ni(H_{2}O{)}_3}_4]$\cdot$13H_{2}O$
• Magnetic excitations in molecular magnets with complex bridges: The tetrahedral molecule Ni${}_4$Mo${}_{12}$
• Quantum avalanche in the Fe${}_8$ Molecular-Magnet
• Magnetic Exchange in Spin Clusters
• Magnetic excitations in the trimeric compounds A${}_3$Cu${}_3$(PO${}_4$)${}_4$ (A = Ca, Sr, Pb)
• Temperature changes of the Fe${}_8$ molecular magnet during its spin reversal process

Cited by in corpus (4)

• Magnetostructural Dependencies in $3d^2$ Systems: The Trigonal Bipyramidal V${}^{3+}$ Complex
• Molecular magnetism in the multi-configurational self-consistent field method
• Determination of magnon mass of neodymium magnet by temperature dependence of spontaneous magnetization
• Scientific instrument for creation of effective Cooper pair mass spectroscopy