Preparation, structure and physical properties of Fe-, Co- and Ni-rich melt-quenched ribbons containing Zr or Hf. Part III: Magnetic properties

I. Bakonyi, Vassil Skumryev, Richard Reisser, Gerfried Hilscher, L. Varga, L. Kiss, Helmut Kronmüller, Reiner Kirchheim

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Abstract

A melt-spinning technique was used to produce TE-TL alloy ribbons with TE = Zr and Hf and TL = Fe, Co or Ni for compositions around the TL-rich eutectic (about 90 at.% TL content). In this part of a series of papers on these alloys, experimental results on the low-temperature magnetic properties of the Zr-Fe and Zr-Ni ribbons will be given. The ac susceptibility (χac) data on the amorphous Zr-Fe alloys indicated the onset of magnetic ordering at Tc 200 K and the occurrence of a second magnetic transition at Tf ≈ 70 K. It was also found that hydrogenation changed both the Curie temperature Tc and the temperature Tf in the same sense as an increase of the Zr content. Furthermore, it could be established from χac measurements that there is a considerable spatial redistribution of hydrogen within these samples during a period of up to two weeks after hydrogenation by electrolysis. The Curie points of the amorphous and bcc phase of the Zr9Ni91 alloy were practically the same and much smaller than the previous reported values of amorphous alloys of similar compositions. The critical concentration for the onset of magnetic ordering in the Zr-Ni system was found to be around 89 at.% Ni.

Original languageEnglish
Pages (from-to)117-124
Number of pages8
JournalZeitschrift fuer Metallkunde/Materials Research and Advanced Techniques
Volume88
Issue number2
Publication statusPublished - Feb 1997

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ribbons
Magnetic properties
Physical properties
physical properties
magnetic properties
preparation
Hydrogenation
Magnetization
hydrogenation
Melt spinning
Amorphous alloys
Curie temperature
Chemical analysis
Electrolysis
melt spinning
Eutectics
Hydrogen
electrolysis
eutectics
Temperature

ASJC Scopus subject areas

  • Metals and Alloys

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Preparation, structure and physical properties of Fe-, Co- and Ni-rich melt-quenched ribbons containing Zr or Hf. Part III : Magnetic properties. / Bakonyi, I.; Skumryev, Vassil; Reisser, Richard; Hilscher, Gerfried; Varga, L.; Kiss, L.; Kronmüller, Helmut; Kirchheim, Reiner.

In: Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques, Vol. 88, No. 2, 02.1997, p. 117-124.

Research output: Contribution to journalArticle

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