Effect of external magnetic field on valence-electron structures of Fe and Ni in Invar, Permalloy and the other Fe-Ni alloys by using K beta-to-K alpha X-ray intensity ratios

Alim, Bunyamin; Han, Ibrahim; Demir, Lütfü

doi:10.1016/j.apradiso.2016.03.001

Makale Tam Makale Uluslararası 2016

Effect of external magnetic field on valence-electron structures of Fe and Ni in Invar, Permalloy and the other Fe-Ni alloys by using K beta-to-K alpha X-ray intensity ratios

Bunyamin Alim, Ibrahim Han, Lütfü Demir

APPLIED RADIATION AND ISOTOPES Cilt 112 · ss. 5–12 · 01.06.2016

DOI ile aç

Özet

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, K beta-to-K alpha 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 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. (C) 2016 Elsevier Ltd. All rights reserved.

Anahtar kelimeler

CROSS-SECTIONS Co ELEMENTS magnetic field Mn Fe-Ni alloy Valence electron structure K beta-to-K alpha X-ray intensity ratio SUBSHELL FLUORESCENCE YIELDS CHARGE-TRANSFER CR TI NIXFE1-X

Atıf için künye

Alim, B., Han, I., & Demir, L. (2016). Effect of external magnetic field on valence-electron structures of Fe and Ni in Invar, Permalloy and the other Fe-Ni alloys by using K beta-to-K alpha X-ray intensity ratios. APPLIED RADIATION AND ISOTOPES, 112, 5–12. https://doi.org/10.1016/j.apradiso.2016.03.001

BibTeX

@article{alim2016-63198,
  author = {Alim, Bunyamin and Han, Ibrahim and Demir, Lütfü},
  title = {Effect of external magnetic field on valence-electron structures of Fe and Ni in Invar, Permalloy and the other Fe-Ni alloys by using K beta-to-K alpha X-ray intensity ratios},
  journal = {APPLIED RADIATION AND ISOTOPES},
  year = {2016},
  volume = {112},
  pages = {5--12},
  issn = {0969-8043},
  doi = {10.1016/j.apradiso.2016.03.001},
  url = {https://akademik.atauni.edu.tr/yayinlar/63198-effect-of-external-magnetic-field-on-valence-electron-structures-of-fe-and-ni-in}
}