K. Yu. Monakhov, W. Wernsdorfer, “A cubane-type nickel single-molecule magnet with exchange-biased quantum tunneling of magnetization”, Mendeleev Commun., 2020, Volume 30, Issue 2,Pages <nobr>168

This article is cited in 2 papers

Communications

A cubane-type nickel single-molecule magnet with exchange-biased quantum tunneling of magnetization

K. Yu. Monakhov^a, W. Wernsdorfer^bc

^a Leibniz Institute of Surface Engineering (IOM), Leipzig, Germany
^b Physikalisches Institut, Karlsruhe Institute of Technology, Karlsruhe, Germany
^c Institute of Nanotechnology, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany

Abstract: Low temperature magnetization measurements were performed on single crystals of the pyridyl-alcohol-supported [Ni(μ₃-Cl)Cl(HL·S)]₄ coordination cluster and they revealed open hysteresis loops up to 30mK at a sweep rate of 0.07Ts⁻¹. The studied molecule with intramolecular ferromagnetic coupling J_intra of 15.251K (+10.6cm⁻¹) is an exchange-biased single-molecule magnet that exhibits intermolecular antiferromagnetic coupling J_inter of −0.004K (−0.003cm⁻¹) in the supramolecular environment of four other cubane-type units. Quantum tunneling of magnetization characterized by five steps at −0.1, −0.05, 0, 0.05 and 0.1T was observed.

Keywords: nickel, tetranuclear metal complex, single-crystal measurements, magnetism, intermolecular exchange coupling.

Language: English

DOI: 10.1016/j.mencom.2020.03.012