The effect of doped ions on single-molecule magnets of the Mn12-Ac family
Zhang Jun-Rong (张俊荣)a, He Lun-Hua(何伦华)a, Cao Hui-Bo (曹慧波)b, Wang Fang-Wei (王芳卫)a, Zhang Pan-Lin (张泮霖)a
aState Key Laboratory of Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; bLaboratoire Léon Brillouin, CEA-CNRS, CE-Saclay, 91191 Gif-sur-Yvette, France
Abstract This paper investigates the single-molecule magnets of pure and Cr/Fe-doped Mn$_{12}$-Ac. The components of the mixed crystals are identified by AC susceptibility technique. The ground-state spin and anisotropy parameters of doped Mn$_{12}$-Ac are obtained: (i) Mn$_{11}$Cr-Ac ($S$=19/2, $D$=0.62 K, $B$=0.0009 K, $\varDelta$=63 K), and (ii) Mn$_{11}$Fe-Ac ($S$=21/2, $D$=0.39 K, $B$=0.001 K, $\varDelta$=55 K). The single-ion origin of the magnetic anisotropy is discussed.
Received: 21 April 2008
Revised: 24 April 2008
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos 10505029 and
10375088).
Cite this article:
Zhang Jun-Rong (张俊荣)a, He Lun-Hua(何伦华), Cao Hui-Bo (曹慧波), Wang Fang-Wei (王芳卫), Zhang Pan-Lin (张泮霖) The effect of doped ions on single-molecule magnets of the Mn12-Ac family 2008 Chin. Phys. B 17 4318
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