Macroscopic quantum tunneling of the magnetization in the single crystal of [(Mn0.96Cr0.04)12O12(CH3COO)16(H2O)4]∙2CH3COOH∙4H2O
Macroscopic quantum tunneling of the magnetization in the single crystal of [(Mn0.96Cr0.04)12O12(CH3COO)16(H2O)4]∙2CH3COOH∙4H2O
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DOI：
10.1063/1.1923752
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发表时间：
2005-05
影响因子：
4
通讯作者：
Lunhua He;Quan Yan;Feixiang Wang
中科院分区：
文献类型：
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作者：
Lunhua He;Quan Yan;Feixiang Wang
Large-size single crystals of the single-molecule magnet [(Mn0.96Cr0.04)12O12 (CH3COO)16(H2O)4]∙2CH3COOH∙4H2O ((Mn0.96Cr0.04)12‐Ac) were grown, and the effect of Cr substitution on quantum tunneling of the magnetization (QTM) was investigated. In comparison with its parent Mn12-Ac {abbreviated for [Mn12O12(CH3COO)16(H2O)4]∙2CH3COOH∙4H2O}, a faster relaxation, i.e., a higher QTM probability, has been observed in (Mn0.96Cr0.04)12‐Ac. This modulation of the relaxation time due to the Cr doping could be attributed to additional intrinsic, but distributed, transverse and longitudinal anisotropies raised by a subtle change of the local environment in the magnetic Mn12 core.
