中国物理B ›› 2005, Vol. 14 ›› Issue (9): 1892-1895.doi: 10.1088/1009-1963/14/9/037
曹慧波, 何伦华, 王芳卫
Cao Hui-Bo (曹慧波), He Lun-Hua (何伦华), Wang Fang-Wei (王芳卫)
摘要: A new single-molecule magnet [Mn11Fe1O12 (CH3COO)16(H2O)4]$\cdot$2CH3COOH$\cdot$4H2O (Mn11Fe1) has been synthesized. The structure has been studied by the single crystal x-ray diffraction. The difference of Jahn--Teller distortion between Fe3+ and Mn3+ ion reveals that Fe3+ ion substitutes for Mn3+ ion on the Mn(3) sites in the Mn12 skeleton. The temperature dependence of the magnetization gives a blocking temperature TB=1.9K for Mn11Fe1. Based on the magnetization process analysis of the crystal at T=2K, we suggest that Mn11Fe1 has the ground state with a total spin S= 11/2.
中图分类号: (Magnetization curves, hysteresis, Barkhausen and related effects)