Title

Epr And Magnetic Quantum Tunneling Studies Of The Mixed Valent [Mn 4(Anca)4(Hedea)2(Edea)2] ·2Chcl3, Etoh Single-Molecule Magnet

Keywords

Electron Paramagnetic Resonance; Magnetic anisotropy; Quantum Tunneling of Magnetization; Single-molecule magnet

Abstract

High-frequency Electron Paramagnetic Resonance (EPR) and Quantum Tunneling of Magnetization (QTM) measurements have been carried out on single-crystal samples of a mixed-valent Mn2IIMn2III single-molecule magnet (SMM). Frequency, temperature and field-oriented studies reveal an S = 9 spin ground state with low-lying excited spin states. Numerical simulations were performed via exact diagonalization of a multi-spin Hamiltonian, in which the anisotropy of the molecule is based on the anisotropy of the individual ions and their couplings. We found that the EPR and QTM spectra may adequately be explained with two s = 5/2 MnII ions weakly coupled to a rigid s = 4 spin, formed by the two ferromagnetically coupled MnIII ions. © 2011 Elsevier B.V. All rights reserved.

Publication Date

11-28-2011

Publication Title

Polyhedron

Volume

30

Issue

18

Number of Pages

2965-2968

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.poly.2011.01.029

Socpus ID

82255186656 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/82255186656

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