High-field ground-state level crossing and magnetic susceptibility of an {Fe8}-cubane cluster

Physical Review B - Condensed Matter and Materials Physics

Volumn 80, Issue 9, 2009, Pages

  Matsuo, Akira ^a   Kindo, Koichi ^a   Nojiri, Hiroyuki ^b   Engelhardt, Larry ^c   Luban, Marshall ^d   Brechin, Euan K ^e   Gass, Ian A ^e  

^a UNIVERSITY OF TOKYO   (Japan)

^b TOHOKU UNIVERSITY   (Japan)

^c FRANCIS MARION UNIVERSITY   (United States)

^d IOWA STATE UNIVERSITY   (United States)

^e UNIVERSITY OF EDINBURGH   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 70349971136     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.80.092401     Document Type: Article

References (11)

1. D. Gatteschi, R. Sessoli, and J. Villain, Molecular Nanomagnets (Oxford University Press, New York, 2006).
2. R. E. P. Winpenny, J. Chem. Soc. Dalton Trans. 2002, 1 (2002). 10.1039/b107118c
3. R. E. P. Winpenny, Comp. Coord. Chem. II 7, 125 (2004). 10.1016/B0-08-043748-6/06199-5
4. D. Gatteschi and R. Sessoli, Angew. Chem., Int. Ed. 42, 268 (2003). 10.1002/anie.200390099
5. M. Affronte, S. Carretta, G. A. Timco, and R. E. P. Winpenny, Chem. Commun. (Cambridge) 2007, 1789 (2007). 10.1039/b615543j
6. M. Evangelisti, F. Luis, L. J. de Jongh, and M. Affronte, J. Mater. Chem. 16, 2534 (2006). 10.1039/b603738k
7. G. Aromi and E. K. Brechin, Struct. Bonding 122, 1 (2006). 10.1007/430-022
8. {Fe8} cubane abbreviates the compound with the chemical formula [Fe 8 III O4 (sao) 8 (py) 4]. It is prepared using the ligand salicylaldoxime (saoH2; IUPAC name: 2-hydroxybenzaldehyde oxime) [I. A. Gass, C. J. Milios, A. G. Whittaker, F. P. A. Fabiani, S. Parsons, M. Murrie, S. P. Perlepes, and E. K. Brechin, Inorg. Chem. 45, 5281 (2006)]. 10.1021/ic0607843
9. L. Engelhardt, I. A. Gass, C. J. Milios, E. K. Brechin, M. Murrie, R. Prozorov, M. Vannette, and M. Luban, Phys. Rev. B 76, 172406 (2007). 10.1103/PhysRevB.76.172406
10. The existence of a second predicted level crossing at 81 T is due to the fact that in zero field the next higher level has S=2 with an energy 164 K above the lowest S=0 level (Ref.). This could not be tested, as it is outside the current range of our experimental facilities.
11. The measured magnetization versus field was independently calibrated using a standard sample, and it was found that the value of the magnetization at 55 T and 1.3 K was indeed 2 μB /f.u., in agreement with theory.