Abstract
The high-pressure magnetic properties of the iodo-substituted bisdiselenazolyl radical ferromagnet IBPSSEt have been studied by vibrating-coil SQUID magnetometry. The magnetic state at a pressure () of approximately 2 GPa has the highest Curie temperature () of 27.5 K, and displays an ideal three-dimensional (3D) ferromagnetic interaction network. The value of observed by ac magnetic susceptibility measurements is consistent with that obtained from dc measurements below approximately 4 GPa. Field-cooled dc measurements at more elevated pressures reveal a slow evolution of magnetic ordering, so that at GPa the structure may be described in terms of a 1D ferromagnetic chain with predominantly antiferromagnetic lateral (interchain) interactions, in accord with the results of density functional theory calculations.
- Received 21 November 2018
- Revised 30 December 2018
DOI:https://doi.org/10.1103/PhysRevB.99.014417
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