High- T c Molecular-Based Magnets: Ferrimagnetic Mixed-Valence Chromium(III)-Chromium(II) Cyanides with T c at 240 and 190 Kelvin
- 3 December 1993
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 262 (5139) , 1554-1557
- https://doi.org/10.1126/science.262.5139.1554
Abstract
Molecular-based magnets with high magnetic-ordering temperatures, T c , can be obtained by mild chemistry methods by focusing on the bimetallic and mixed-valence transition metal μ-cyanide of the Prussian blue family. A simple orbital model was used to predict the electronic structure of the metal ions required to achieve a high ordering temperature. The synthesis and magnetic properties of two compounds, [Cr 5 (CN) 12 ]⋅10H 2 O and Cs 0.75 [Cr 2.125 (CN) 6 ]⋅5H 2 O, which exhibited magnetic-ordering temperatures of 240 and 190 kelvin, respectively, are reported, together with the strategy for further work.Keywords
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