利用Kβ与Kα X射线强度比研究外磁场对因瓦合金、坡莫合金及其他铁镍合金中Fe和Ni价电子结构的影响。
Effect of external magnetic field on valence-electron structures of Fe and Ni in Invar, Permalloy and the other Fe-Ni alloys by using Kβ-to-Kα X-ray intensity ratios.
作者信息
Alım Bünyamin, Han İbrahim, Demir Lütfü
机构信息
Vocational School, Department of Electricity and Energy, Bayburt University, TR-69000 Bayburt, Turkey.
Faculty of Arts and Sciences, Department of Physics, Ağrι İbrahim Çeçen University, TR-04100 Ağrι, Turkey.
出版信息
Appl Radiat Isot. 2016 Jun;112:5-12. doi: 10.1016/j.apradiso.2016.03.001. Epub 2016 Mar 4.
The effect of external magnetic field on the valence-electron structures of Fe and Ni in various Fe-Ni alloy compositions was investigated by using X-ray fluorescence spectroscopy. Firstly, Kβ-to-Kα X-ray intensity ratios of Fe and Ni in Invar (Fe0.64Ni0.36), Permalloy (Fe0.20Ni0.80) and FexNi1-x (x=0, 0.40, 0.52, 0.55, 0.61, and 1) alloys were measured without any magnetic field and under 0.5 and 1T external magnetic fields, separately. Later, the valence-electron structures of Fe and Ni in both pure form and alloys were obtained by comparison of measured X-ray intensity ratios with the results of multi-configurations Dirac-Fock (MCDF) calculations. The results obtained for valence-electron structures of Fe and Ni in various Fe-Ni alloys were evaluated in terms of magnetic field effect, delocalization and/or charge transfer phenomena. The results have shown that valence electron structure of Fe and Ni in Fe-Ni alloys are dependent on both external magnetic field and concentration of alloy elements.
利用X射线荧光光谱法研究了外部磁场对各种Fe-Ni合金成分中Fe和Ni价电子结构的影响。首先，分别测量了无磁场以及0.5T和1T外部磁场下因瓦合金（Fe0.64Ni0.36）、坡莫合金（Fe0.20Ni0.80）和FexNi1-x（x = 0、0.40、0.52、0.55、0.61和1）合金中Fe和Ni的Kβ与Kα X射线强度比。随后，通过将测量的X射线强度比与多组态狄拉克-福克（MCDF）计算结果进行比较，得到了纯态和合金态Fe和Ni的价电子结构。从磁场效应、离域和/或电荷转移现象方面对各种Fe-Ni合金中Fe和Ni价电子结构的研究结果进行了评估。结果表明，Fe-Ni合金中Fe和Ni的价电子结构既取决于外部磁场，也取决于合金元素的浓度。
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