Role of orbitally degenerate Mn(III) ions in magnetic bistability of Mn5-cyanide cluster: new prospects for design of single molecule magnets with high blocking temperatures
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PALII, Andrei; OSTROVSCHII, Serghei; CLOCHIŞNER, Sofia; ȚUKERBLAT, Boris; GALAN-MASCAROS, J; BERLINGUETTE, C; DUNBAR, K. Role of orbitally degenerate Mn(III) ions in magnetic bistability of Mn5-cyanide cluster: new prospects for design of single molecule magnets with high blocking temperatures. In: Moldavian Journal of the Physical Sciences. 2005, nr. 1(4), pp. 25-29. ISSN 1810-648X.
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Moldavian Journal of the Physical Sciences
Numărul 1(4) / 2005 / ISSN 1810-648X /ISSNe 2537-6365

Role of orbitally degenerate Mn(III) ions in magnetic bistability of Mn5-cyanide cluster: new prospects for design of single molecule magnets with high blocking temperatures

Pag. 25-29

Palii Andrei1, Ostrovschii Serghei1, Clochişner Sofia1, Țukerblat Boris2, Galan-Mascaros J3, Berlinguette C3, Dunbar K3
 
1 Institutul de Fizică Aplicată al AŞM,
2 Universitatea Ben Gurion Israel,
3 Universitatea Texas la Austin
 
Disponibil în IBN: 14 decembrie 2013


Rezumat

In this paper we report a new model aimed at the explanation of the magnetic properties of the trigonal bipyramidal cyanide cluster - [MnII (tmphen)2]3[MnIII (CN)6]2} (tmphen = 4,5,7,8-tetramethyl-1,10-phenantroline). The model explicitly takes into account the strong single-ion anisotropy associated with the unquenched orbital angular momenta of two Mn(III) ions, and satisfactory explains the observed temperature dependence of dc magnetic susceptibility. At the same time the model is compatible with firmly confirmed fact that the system represents single molecule magnet and provides the theoretical background for the design of new cyanide-based single molecule magnets with higher blocking temperatures.