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57Fe M?ssbauer spectra have been obtained at room temperature for (NdDy)TiFe11, and at 11 K and room temperature for the corresponding nitrides (NdDy)TiFe11Ny. The magnetic behaviors of Fe atoms at different sites have been studied. We have found a larger increase of the hyperfine fields upon nitrogenation due to the higher nitrogen content in these compounds and got a bigger enhancement of the isomer shift in 8j site because of the nearest nitrogen environment. 相似文献
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研究了由样品厚度而引起的饱合效应对穆斯堡尔谱产生的影响,对于碰分裂样品,应取其透射谱中3、4峰的强度来计算信噪比为宜.据此测量得到a-Fe2O3的无反冲分数fa在室温下为0.65.关键词:##4穆斯堡尔谱;;无反冲分数;;信噪比 相似文献
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57Fe M?ssbauer spectra have been obtained at room temperature for (NdDy)TiFe11, and at 11 K and room temperature for the corresponding nitrides (NdDy)TiFe11Ny. The magnetic behaviors of Fe atoms at different sites have been studied. We have found a larger increase of the hyperfine fields upon nitrogenation due to the higher nitrogen content in these compounds and got a bigger enhancement of the isomer shift in 8j site because of the nearest nitrogen environment. 相似文献
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铁的简单配合物及羰基化合物的Mossbauer研究已有报道,对有机铁化合物的相应工作进行得较少.本文报道一类具有夹心结构的有机铁化合物的~(57)Fe Mossbauer参数及其与结构的一些关系. 实验双(π-芳烃)铁化合物样品按文献[1]方法合成,经重结晶. ~(57)Fe Mossbauer谱用OXFORD INS.MS500型Mossbauer谱仪室温下测定,放射源为~(57)Co/Rh,强度为25mCi;样品厚度约20mgFe/cm~2;谱仪速度用超纯α-铁箔标定;化学位移值相对于室温的α-Fe谱线中心;谱线及参数经计算机拟合得到,收敛判据为x~2<1.1. 相似文献
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具2,3-二氯-5,6-二腈基对苯醌自由基阴离子(DDQ-·)的Fe(Ⅱ)三元配合物的合成及性质 总被引:1,自引:0,他引:1
In this paper the ternary complexes of Fe(Ⅱ),DDQ-·,and L[L=o-phenanthroline (phen),2, 2'-bip yridine (bipy),2, 2'-bipyridine-N,N'-dioxide(bipyO2),salicyloylhydrazine(shH),and Cl-,respectively]were synthesized The chemical compositions of the com-plexes w ere deteim fined by elem ental analysis, and their structures and p roperties w ere researched by 1R,UV-Vis, 56FeM ssbauer spectra, molar conductivities, solid conductivities and DTA. 相似文献
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