Metamagnetism in a coordination polymer built of trimeric cobalt units and melamine

Autor(en)

Ignacio Bernabé Vírseda, Arthur Mantel, Alexander Prado-Roller, Michael Eisterer, Hidetsugu Shiozawa

Abstrakt

A coordination polymer of linear trimeric cobalt units and melamine has been synthesized. The magnetic isotherms of violet coloured crystals as long as 400 μm show a field-induced transition in an external field of about 2 T at temperatures approximately below 2 K. It is addressed that by assuming the coexistent positive and negative exchange between the nearest-neighbour spins in the linear trimer, this metamagnetism can be interpreted as a transition from antiferromagnetic to ferromagnetic exchange within each trimeric spin cluster. Although weak inter-cluster or inter-chain exchange to yield a long-range magnetic order is another possible and often attributed origin of metamagnetism in low-dimensional spin systems, this study demonstrates the significance of the exchange flip within each cluster in clustered spin networks.

Organisation(en)

Institut für Anorganische Chemie, Core Facility für Kristallstrukturanalyse, Elektronische Materialeigenschaften

Externe Organisation(en)

Czech Academy of Sciences, Technische Universität Wien

Journal

Royal Society Open Science

Band

10

Anzahl der Seiten

10

ISSN

2054-5703

DOI

https://doi.org/10.1098/rsos.230910

Publikationsdatum

11-2023

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik, 104003 Anorganische Chemie, 103009 Festkörperphysik

Schlagwörter

ASJC Scopus Sachgebiete

General

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/a9c09af2-580e-4e74-b21b-16c44cad7b06