| Moessbauer Studies on Spin Transition in Zinc Dilution Complexes [Fe1—xZnx（dpp）2（NCS）2]py（x=0.05—0.40） |
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| 引用本文： | 黄红波,陶建清,余智,邵挺,夏元复.Moessbauer Studies on Spin Transition in Zinc Dilution Complexes [Fe1—xZnx（dpp）2（NCS）2]py（x=0.05—0.40）[J].中国物理快报,2003,20(7):1161-1164. |
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| 作者姓名： | 黄红波 陶建清 余智 邵挺 夏元复 |
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| 作者单位： | [1]DepartmentofPhysics,NanjingUniversity,Nanjing210093 [2]DepartmentofChemistry,YanchengTeachersCollege,Yancheng224002 [3]DepartmentofPhysics,NanjingUniversity,Nanjing210093；StateKeyLaboratoryofCoordinationChemistry,DepartmentofChemistry,nanjingUniversity,Nanjing210093 [4]StateKeyLaboratoryofCoordinationChemistry,DepartmentofChemistry,nanjingUniversity,Nanjing210093 |
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| 摘 要： | A series of spin transition complexes Fe1-xZnx(dpp)2(NCS)2]ph(x=0.05,0.10,0.15,0.20,0.25,and 0.40;py=pyridine) has been synthesized and studied by Moessbauer spectroscopy.The high-spin structure is frozen at room temperature,and the induced meta-stable high-spin phase by the so-called rapid cooling method is monitored by temperature and time-dependent Moessbauer spectra.The investigation on dynamic relaxation of the high-spin state to the low-spin state at 80-K reveals sigmoid behaviour and existence of cooperative effect for low diluted complexes.This cooperative effect is wrecked by the dilution of Zn(Ⅱ）ions in Fe（Ⅱ）ion sites,and relaxation curves gradually become to obey the first-order kinetics as the ratio of the dilution increases.
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| 关 键 词： | 旋转变化 Moessbauer光谱 结构 混合物 动力学 磁化学 [Fe1－xZnx（dpp）2（NCS）2]py 锌离子 |
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