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2018 | 133 | 3 | 676-679
Article title

Magnetocaloric Effect in Amorphous and Partially Crystallized Fe₈₀Zr₇Cr₆Nb₂Cu₁B₄ Alloy

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Abstracts
EN
In the present work the microstructure and thermomagnetic properties of Fe₈₀Zr₇Cr₆Nb₂Cu₁B₄ ribbon in the as-quenched state and after the accumulative annealing in the temperature range 600-800 K for 10 min were studied using Mössbauer spectroscopy and vibrating sample magnetometry. The second order phase transition from ferro- to paramagnetic state is observed. The Curie temperature T_{C} defined as inflection point on the magnetization versus temperature curve recorded on zero-field cooled mode equals 262.5 K for the as-quenched material. With increasing the annealing temperature increase of T_{C} is observed. The maximum value of the magnetic entropy change (-ΔS) observed in the vicinity of the Curie point is equal to 0.85 J/(kg K) for the alloy in the as-quenched state. Moreover, for the samples annealed up to 750 K for 10 min the low intensity maximum at about 190 K related to the supplementary magnetic phase is observed. The presence of this phase was confirmed as additional component visible on hyperfine field distributions of Mössbauer spectra.
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Contributors
author
  • Częstochowa University of Technology, Institute of Physics, Armii Krajowej 19, 42-200 Częstochowa, Poland
author
  • Częstochowa University of Technology, Institute of Physics, Armii Krajowej 19, 42-200 Częstochowa, Poland
author
  • Wrocław University of Science and Technology, Smoluchowskiego 25, 50-370 Wrocław, Poland
author
  • Częstochowa University of Technology, Institute of Physics, Armii Krajowej 19, 42-200 Częstochowa, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv133n3p104kz
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