title: Correlation between magnetic properties and the electronic structures of soft magnetic ternary Fe(78-x)Y(x)B(22) (x = 4-9) bulk metallic glasses.
abstract: Fe and Y K-edge extended x-ray absorption fine structure, Fe(Y) L(3,2)-edge (L(3)-edge) x-ray absorption near-edge structure (XANES) and valence-band photoemission spectroscopy (VB-PES) measurements have been carried out to study soft magnetic ternary Fe(78-x)Y(x)B(22) bulk metallic glasses (BMGs). The combined XANES and VB-PES results do not show broadening of the Fe 3d band to support the previous interpretation of the reduction of the magnetic moment in BMGs by Y-induced decrease of exchange splitting of Fe 3d orbitals. Instead, the density of delocalized/itinerant Fe 3d states in the vicinity of the Fermi level is found to be reduced by Y substitution, which reduces the strength of itinerant-states-mediated ferromagnetic coupling between local spins on the Fe ions and the total magnetic moment of the Fe-based BMGs.
authors.affiliation: Department of Physics, Tamkang University, Tamsui 251, Taiwan.
authors.forename: M T
authors.initials: MT
authors.lastname: Liu
authors.forename: S C
authors.initials: SC
authors.lastname: Ray
authors.forename: H M
authors.initials: HM
authors.lastname: Tsai
authors.forename: C W
authors.initials: CW
authors.lastname: Pao
authors.forename: D C
authors.initials: DC
authors.lastname: Ling
authors.forename: W F
authors.initials: WF
authors.lastname: Pong
authors.forename: J W
authors.initials: JW
authors.lastname: Chiou
authors.forename: M-H
authors.initials: MH
authors.lastname: Tsai
authors.forename: L Y
authors.initials: LY
authors.lastname: Jang
authors.forename: T W
authors.initials: TW
authors.lastname: Pi
authors.forename: J F
authors.initials: JF
authors.lastname: Lee
authors.forename: C Y
authors.initials: CY
authors.lastname: Lin
authors.forename: T S
authors.initials: TS
authors.lastname: Chin