Influence of yttrium on the magnetic properties of amorphous Fe{sub 91{minus}x}Y{sub x}Zr{sub 9} alloys

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.365510· OSTI ID:496508

Driouch, L; Kim, K S; Rao, K V ^[1]

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1. Department of Condensed Matter Physics, Royal Institute of Technology, S-100 44 Stockholm (Sweden)

In this article, we investigate and discuss the influence of the substituting Fe with Y on the magnetic properties of amorphous Fe{sub 91}Zr{sub 9} alloys prepared by single-roll melt spinning technique. The temperature dependence of magnetization for amorphous Fe{sub 91{minus}x}Y{sub x}Zr{sub 9} alloys, at low fields, shows the existence of antiferromagnetic (AFM) couplings between Fe atoms. On increasing the concentration of Y, the strength of the AFM interactions is suppressed and the Curie temperature T{sub C} increases, which can be explained on the basis of the atomic size effect of Y. From an analysis of the approach to saturation magnetization M{sub S}, the magnetic moment {mu}{sub Fe} per Fe atom, anisotropy field, and local random anisotropy constant K{sub 1} have been extracted. It is found that {mu}{sub Fe} increases from 1.57 to 2.04 {mu}{sub B} and K{sub 1} decreases with increasing Y concentration. This result suggests that the substitution Fe with Y seems to favor the increase of magnetic order by reducing the random anisotropy and thus change the magnetic structure from being an asperomagnetic to a ferromagnetic one. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 496508
• Report Number(s): CONF-961141--
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMORPHOUS STATE
ANISOTROPY
CURIE POINT
FERROMAGNETIC MATERIALS
IRON ALLOYS
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETIZATION
METALLIC GLASSES
YTTRIUM ALLOYS
ZIRCONIUM ALLOYS