Mössbauer Studies on Spin Transition in Zinc Dilution Complexes [Fe1-x Znx (dpp)2 (NCS)2 ].py (x = 0.05-0.40)
HUANG Hong-Bo1 , TAO Jian-Qing2 , YU Zhi1,3 , SHAO Ting3 , HSIA Yuan-Fu1
1 Department of Physics, Nanjing University, Nanjing 210093
2 Department of Chemistry, Yancheng Teachers College, Yancheng 224002
3 State Key Laboratory of Coordination Chemistry, Department of Chemistry, Nanjing University, Nanjing 210093
Mössbauer Studies on Spin Transition in Zinc Dilution Complexes [Fe1-x Znx (dpp)2 (NCS)2 ].py (x = 0.05-0.40)
HUANG Hong-Bo1 ;TAO Jian-Qing2 ;YU Zhi1,3 ;SHAO Ting3 ;HSIA Yuan-Fu1
1 Department of Physics, Nanjing University, Nanjing 210093
2 Department of Chemistry, Yancheng Teachers College, Yancheng 224002
3 State Key Laboratory of Coordination Chemistry, Department of Chemistry, Nanjing University, Nanjing 210093
关键词 ：
82.80.Ej ,
81.05.-t
Abstract ： A series of spin transition complexes [Fe1-x Znx (dpp)2 (NCS)2 ]py (x = 0.05, 0.10, 0.15. 0.20, 0.25, and 0.40; py=pyridine) has been synthesized and studied by Mössbauer 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 Mössbauer 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.
Key words ：
82.80.Ej
81.05.-t
出版日期: 2003-07-01
:
82.80.Ej
(X-ray, M?ssbauer, and other γ-ray spectroscopic analysis methods)
81.05.-t
(Specific materials: fabrication, treatment, testing, and analysis)
引用本文:
HUANG Hong-Bo;TAO Jian-Qing;YU Zhi;SHAO Ting;HSIA Yuan-Fu. Mössbauer Studies on Spin Transition in Zinc Dilution Complexes [Fe1-x Znx (dpp)2 (NCS)2 ].py (x = 0.05-0.40)
[J]. 中国物理快报, 2003, 20(7): 1161-1164.
1-x Znx (dpp)2 (NCS)2 ].py (x = 0.05-0.40)
. Chin. Phys. Lett., 2003, 20(7): 1161-1164.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I7/1161
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