Low-Temperature Ferromagnetic Order in a Two-Level Layered Co2+ Material
Patrick W. Doheny,
Gavin B. G. Stenning,
Adam Brookfield
et al.
Abstract:The magnetic properties of a 2D layered material consisting
of
high-spin Co2+ complexes, [Co(NH3NH2)2(H2O)2Cl2]Cl2 (CoHyd
2
Cl
4
), have been extensively characterized using
electron paramagnetic resonance, magnetic susceptibility, and low-temperature
heat capacity measurements. Electron paramagnetic resonance spectroscopy
studies suggest that below 50 K, the J = 3/2 orbital
triplet state of Co is gradually depopulated in favor of the J = 1/2 spin state, which is dominant below 20 K. In light
of this, the m… Show more
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