title: Torque-detected ESR of a tetrairon(III) single molecule magnet.
abstract: Single-crystal studies on anisotropic ESR-active materials can be conveniently carried out using torque-detected (TD) ESR, a novel technique which brings to ESR the sensitivity typical of torque magnetometry (TM). This method, which is easily operated in high magnetic fields and in a wide range of frequencies, was applied to investigate magnetic anisotropy in crystals of a tetrairon(III) single-molecule magnet with an S=5 ground state. TDESR was supported by TM measurements carried out in situ and provided an accurate estimate of the second-order axial anisotropy parameter D and of the longitudinal fourth-order contribution B(4)(0). The results were validated through a parallel angle-resolved investigation by traditional high-frequency ESR on the same material.
authors.affiliation: 1. Physikalisches Institut, Universität Stuttgart, D-70550 Stuttgart, Germany.
authors.forename: Fadi
authors.initials: F
authors.lastname: El Hallak
authors.forename: Petr
authors.initials: P
authors.lastname: Neugebauer
authors.forename: Anne-Laure
authors.initials: AL
authors.lastname: Barra
authors.forename: Joris
authors.initials: J
authors.lastname: van Slageren
authors.forename: Martin
authors.initials: M
authors.lastname: Dressel
authors.forename: Andrea
authors.initials: A
authors.lastname: Cornia