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Structure, Magnetic Properties and Hyperfine Parameters of Nd-Substituted Ni-Fe-Ga Heusler Alloys

Published online by Cambridge University Press:  23 January 2017

Monica Sorescu ,
Felicia Tolea ,
Mihaela Valeanu  and
Mihaela Sofronie
Monica Sorescu*
Affiliation:
Duquesne University, Department of Physics, Fisher Hall, Pittsburgh, PA 15282, USA
Felicia Tolea
Affiliation:
National Institute of Materials Physics, P.O. Box MG/7, 077125 Bucharest-Magurele, Romania
Mihaela Valeanu
Affiliation:
National Institute of Materials Physics, P.O. Box MG/7, 077125 Bucharest-Magurele, Romania
Mihaela Sofronie
Affiliation:
National Institute of Materials Physics, P.O. Box MG/7, 077125 Bucharest-Magurele, Romania
*
*(Email: sorescu@duq.edu)
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Abstract

Samples of Ni57-xNdxFe18Ga25 with x=2 and 4 were prepared in ribbon form by rapid quenching via melt spinning route. The samples were analyzed by X-ray diffraction (XRD), magnetic measurements and Mössbauer spectroscopy, both in the as-quenched form and after thermal annealing at 900 oC for 2 min and 400 °C for 2 hours. For x=2 the Nd atoms are completely dissolved in the Ni-Fe-Ga matrix, while for x=4 the additional occurrence of the secondary 2:17 phase could be resolved. These findings were supported by the analysis of hyperfine magnetic field distributions obtained from the non-linear least-squares fitting of the Mössbauer spectra.

Keywords

magnetic propertiesMössbauer effectalloy
Type
Articles
Information
MRS Advances , Volume 2 , Issue 25: Mechanical Behavior and Failure Mechanisms of Materials , 2017 , pp. 1341 - 1346
Copyright
Copyright © Materials Research Society 2017 

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References

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