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Exchange coupling in a frustrated trimetric molecular magnet reversed by a 1D nano-confinement

Abstract

Single-molecule magnets exhibit magnetic ordering due to exchange coupling between localized spin components, that makes them primary candidates as nanometric spintronic elements. Here we manipulate exchange interactions within a single-molecule magnet by nanometric structural confinement, exemplified with single-wall carbon nanotubes that encapsulates trimetric nickel(II) acetylacetonate hosting three frustrated spins. It is revealed from bulk and Ni 3d orbital magnetic susceptibility measurements that the carbon tubular confinement allows a unique one-dimensional arrangement of the trimer in which the nearest-neighbour exchange is reversed from ferromagnetic to antiferromagnetic, resulting in quenched frustration as well as the Pauli paramagnetism is enhanced. The exchange reversal and enhanced spin delocalisation demonstrate means of mechanically and electrically manipulating molecular magnetism at the nanoscale for nano-mechatronics and spintronics.

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Publication details

The article was received on 25 Jan 2019, accepted on 11 May 2019 and first published on 13 May 2019


Article type: Communication
DOI: 10.1039/C9NR00796B
Nanoscale, 2019, Accepted Manuscript
  • Open access: Creative Commons BY license
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    Exchange coupling in a frustrated trimetric molecular magnet reversed by a 1D nano-confinement

    O. Domanov, E. Weschke, T. Saito, H. Peterlik, T. Pichler, M. Eisterer and H. Shiozawa, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR00796B

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