Structural, microstructural and magnetic properties of Melt-Spun Y1-xTbxFe2 alloys

•Melt spinning process was found to aid grain refinement in Y1-xTbxFe2 alloy ribbons.•Structural studies indicated presence of pro-peritectic phase in the microstructure.•Mossbauer and Curie temperature studies showed enhancement in exchange with Tb substitution.•Magnetic anisotropy and microstructu...

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Bibliographic Details
Published in:Materials letters 2021-08, Vol.297, p.129963, Article 129963
Main Authors: Arout Chelvane, J., Pavan Kumar, T., Arvindha Babu, D., Srivastava, A.P.
Format: Article
Language:English
Subjects:
Coercivity
Composition
Curie temperature
Grain refinement
Magnetic properties
Magnetism
Magnetization measurements
Materials science
Melt spinning
Mossbauer studies
Rare earth transition metal alloys
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Summary:•Melt spinning process was found to aid grain refinement in Y1-xTbxFe2 alloy ribbons.•Structural studies indicated presence of pro-peritectic phase in the microstructure.•Mossbauer and Curie temperature studies showed enhancement in exchange with Tb substitution.•Magnetic anisotropy and microstructural modification in combination is found to influence the coercivity of Y1-xTbxFe2 alloys. This letter reports the structural, microstructural and magnetic properties of bulk and melt-spun Y1-xTbxFe2 (x = 0, 0.25, 0.5, 0.75&1) alloys. Based on the Y/Tb ratio, minor (Y,Tb)Fe3 phase was found to co-exist with the major (Y,Tb)Fe2 phase. Mossbauer studies indicated enhancement in Fe moments with the substitution of Tb for Y. Curie temperature was found to increase with increase in Tb addition. Owing to grain refinement, a considerable improvement in coercivity has been achieved in Tb containing alloys. Magnetization studies indicated compensation of sub-lattice moments around the composition Y0.5Tb0.5Fe2. Consequently, a large coercivity of about 5.7 kOe has been realized for this composition.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2021.129963