This paper investigates the single-molecule magnets of pure and Cr/Fe-doped Mn12-Ac. The components of the mixed crystals are identified by AC susceptibility technique. The ground-state spin and anisotropy parameters ...This paper investigates the single-molecule magnets of pure and Cr/Fe-doped Mn12-Ac. The components of the mixed crystals are identified by AC susceptibility technique. The ground-state spin and anisotropy parameters of doped Mn12-Ac are obtained: (i) MnllCr-Ac (S=19/2, D=0.62K, B=0.0009K, A=63K), and (ii) Mn11Fe-Ac (S=21/2, D=0.39 K, B=0.001 K, △=55 K). The single-ion origin of the magnetic anisotropy is discussed.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant Nos 10505029 and 10375088)
文摘This paper investigates the single-molecule magnets of pure and Cr/Fe-doped Mn12-Ac. The components of the mixed crystals are identified by AC susceptibility technique. The ground-state spin and anisotropy parameters of doped Mn12-Ac are obtained: (i) MnllCr-Ac (S=19/2, D=0.62K, B=0.0009K, A=63K), and (ii) Mn11Fe-Ac (S=21/2, D=0.39 K, B=0.001 K, △=55 K). The single-ion origin of the magnetic anisotropy is discussed.