Intermolecular interactions in the molecular ferromagnetic NH4Ni(mnt)2.H2O
Article Abstract:
Magnetic coupling in the charge-transfer salt NH4Ni(mnt)2.H2O is very sensitive to intermolecular separation, as indicated by the sharp increase with pressure of the Curie temperature setting the transition to the ferromagnetic state until ferromagnetic order suddenly disappears at 6.8 kbar. Such pressure dependence is shown to stem from a competition between ferromagnetic coupling, as a result of nickel-sulphur intermolecular spin interactions, and antiferromagnetic coupling, from nickel-nickel interactions.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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A ferromagnetic transition at 1.48 K in an organic nitroxide
Article Abstract:
A ferromagnetic transition state is reported for a crystalline nitroxide biradical system. High-field magnetization measurements show that ferromagnetic interactions are exhibited by the nitroxide crystals of N, N'-dioxy-1,3,5,7-tetramethyl-2,6-diazaadamantene. The system was found to have a Curie temperature of 1.48 +/- 0.02 K, the highest so far for any known organic, non-ionic substance.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Origin of ferromagnetic exchange interactions in a fullerene-organic compound
Article Abstract:
Ferromagnetic exchange in a fullerene-organic compound is examined.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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