Abstract
A family of amorphous, solid-solution magnets of VxFe1-x[TCNE]2·zCH2Cl2 (TCNE = tetracyanoethylene; 0 ≤ x ≤ 1) composition has been characterized by IR spectrometry, elemental analysis, and magnetic measurements (ac and dc susceptibility). Substitution of FeII for VII in V[TCNE]2·zCH2Cl2 does not significantly alter the Tc for x ≥ 0.3, which exceeds room temperature; however, Hcr is enhanced by over 2 orders of magnitude, indicating a large increase of random anisotropy. Hence, the magnetic properties of the room-temperature V[TCNE]2·zCH2Cl2 magnet can be finely tuned via a synthetic chemistry methodology, making this material more amenable to future technologies.
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