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

Autor: Ignacio Bernabé Vírseda, Arthur Mantel, Alexander Prado-Roller, Michael Eisterer, Hidetsugu Shiozawa
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Royal Society Open Science, Vol 10, Iss 11 (2023)
Druh dokumentu: article
ISSN: 2054-5703
DOI: 10.1098/rsos.230910
Popis: 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.
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