| KZnF_3:Mn~(2+)的光谱和电子顺磁共振谱分析 |
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| 引用本文： | 郭胜利 张豪锋. KZnF_3:Mn~(2+)的光谱和电子顺磁共振谱分析[J]. 河南师范大学学报(自然科学版), 1993, 21(4): 31-34 |
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| 作者姓名： | 郭胜利 张豪锋 |
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| 作者单位： | 河南师范大学物理系，河南师范大学物理系 453002，新乡，453002，新乡 |
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| 摘 要： | 本文使用Mn~(2+)的参量化d轨道和d~5电子Oh对称的双值不可约表示Hamiltonian矩阵对KZnF_3:Mn~(2+)和KMnF_3的吸收光谱和电子顺磁共振(EPR)谱进行了研究。从这些分析中我们得出了B、C和Dq对MnF_6~(4-)结构参量R的依靠关系,在实验误差范围内,B和C是常数,仅Dq随R变化,且给出了定量关系。并由KZnF_3:Mn~(2+)在15-300K温度范围内的吸收光谱和电子顺磁共振谱求得Mn~(2+)～F~-键长R的热膨胀为R=0.207 0～0.208 0nm.和dR/dT=3.508 8x10~(-6)nm/K。
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| 关 键 词： | 吸收光谱 电子顺磁共振 氟钙钛矿 |
Inetigation on Epr and Abspectrum of KZnF_3:Mn~(2+) |
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| Guo Shengli,Zhang Haofeng Deprtment of Physics,Henan Normal Universily,,XinXiang. Inetigation on Epr and Abspectrum of KZnF_3:Mn~(2+)[J]. Journal of Henan Normal University(Natural Science), 1993, 21(4): 31-34 |
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| Authors: | Guo Shengli Zhang Haofeng Deprtment of Physics Henan Normal Universily XinXiang |
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| Affiliation: | Guo Shengli,Zhang Haofeng Deprtment of Physics,Henan Normal Universily,453002,XinXiang |
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| Abstract: | The EPR cubic zero-field splitting parameter a and the absorption spectrum forKZnF_3:Mn~(2+) and KMnF_3 is investisated by using the parametrisation d orbital for Mn~(2+) and theHamilton matrices of the irreducible representations of the double group Oh for the d~5 cinfigurations.From these data we have studied the dependence of parameters B,C and Dq on R the distance in the MnFcomplex.This analysis reveals that within the expermental errors,B and C are constants and Dq changewith R.The present research receives a quantitative relationship between Dq and R.The thermal expan-sion of the Mn~(2+)-F~-bond,R=0.2075(±0.0005)nm and dR/dT=3.5088*10~(-6)nm/K,for KZnF_3:Mn~(2+)inthe 15——300K temperature range has been studied. |
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| Keywords: | absorption spectrum electron paramagnetic resonace(EPR) perovskite fluorides |
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