Alim B.Han I.Demir L.20.04.20192019-04-2020.04.20192019-04-2020160969-8043https://dx.doi.org/10.1016/j.apradiso.2016.03.001https://hdl.handle.net/20.500.12403/618The 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. K?-to-K? X-rayin-tensity ratios of Fe and Ni in Invar(Fe 0.64 Ni 0.36 ), Permalloy(Fe 0.20 Ni 0.80 ) and Fe N - i x 1x Firstly,(x=0, 0.40, 0.52, 0.55, 0.61, and 1) alloys were measured without any magnetic field and under 0.5 and 1 T 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. © 2016 Elsevier Ltd.eninfo:eu-repo/semantics/closedAccessFe-Ni alloyK?-to-K? X-ray intensity ratioMagnetic fieldValence electron structureCharge transferElectronsFluorescence spectroscopyMagnetic fieldsMagnetismNickelNickel alloysAlloy elementCharge transfer phenomenaDelocalizationsExternal magnetic fieldFeNi alloysValence electron structureX ray fluorescence spectroscopyX-ray intensity ratiosIron alloysalloyironnickelpermalloyunclassified drugArticlechemical compositioncomparative studyconcentration (parameters)controlled studyelectron transportmagnetic fieldpriority journalstructure analysisX ray fluorescenceFe-Ni alloyK?-to-K? X-ray intensity ratioMagnetic fieldValence electron structureCharge transferElectronsFluorescence spectroscopyMagnetic fieldsMagnetismNickelNickel alloysAlloy elementCharge transfer phenomenaDelocalizationsExternal magnetic fieldFeNi alloysValence electron structureX ray fluorescence spectroscopyX-ray intensity ratiosIron alloysalloyironnickelpermalloyunclassified drugArticlechemical compositioncomparative studyconcentration (parameters)controlled studyelectron transportmagnetic fieldpriority journalstructure analysisX ray fluorescenceArticle11251210.1016/j.apradiso.2016.03.001269744862-s2.0-84960455978Q3WOS:000376701700002Q3