Magnetocaloric Effect in Amorphous and Partially Crystallized Fe-Zr-Nb-Cu-B Alloy

• Authors: J. Gondro , K. Błoch , M. Nabiałek , S. Wallters
• Languages of publication: EN

Abstracts

EN

This paper presents the results of an investigation into the: microstructure, magnetic properties and influence of annealing temperature on the magnetocaloric effect of Fe₈₂Zr₇Nb₂Cu₁B₈ alloy in the as-quenched and partially crystalline state. The microstructure was investigated using Mössbauer spectroscopy. The magnetocaloric effect was observed as a change in the magnetic entropy, which was calculated from isothermal magnetization curves. Fully-amorphous Fe₈₂Zr₇Nb₂Cu₁B₈ alloys, in the as-quenched state, exhibit a Curie temperature equal to (340±5) K. The transmission Mössbauer spectrum for the as-quenched Fe₈₂Zr₇Nb₂Cu₁B₈ alloy is typical for weak ferromagnets with the average hyperfine field of 9.86(2) T. For this alloy in the as-quenched state, the changes in maximum magnetic entropy occur near the Curie points and are equal to 0.95 J/(kg K). Also, the maximum magnetic entropy changes decrease after partial crystallization.

Keywords

EN

75.30.Sg; 75.47.Np; 75.50.Bb; 75.50.Kj; 75.90.+w; 87.64.Pj

Discipline

• 75.90.+w: Other topics in magnetic properties and materials (restricted to new topics in section 75)
• 75.30.Sg: Magnetocaloric effect, magnetic cooling(for cryogenics, see 07.20.Mc)
• 75.47.Np: Metals and alloys
• 75.50.Kj: Amorphous and quasicrystalline magnetic materials
• 75.50.Bb: Fe and its alloys

• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 2
• Pages: 606-607

Dates

published

2015-02

Contributors

author

J. Gondro

• Institute of Physics, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa, Poland

author

K. Błoch

• Institute of Physics, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa, Poland

author

M. Nabiałek

• Institute of Physics, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa, Poland

author

S. Wallters

• School of Computing, Engineering and Mathematics, University of Brighton, Lewes Road, Brighton BN2 4GJ, United Kingdom

References

• [1] E. Brück, J. Phys. D Appl. Phys. 38, R381 (2005), doi: 10.1088/0022-3727/38/23/R01
• [2] J. Gondro, J. Świerczek, J. Olszewski, J. Zbroszczyk, K. Sobczyk, W.H. Ciurzynska, J. Rzącki, M. Nabiałek, J. Magn. Magn. Mater. 324, 1360 (2012), doi: 10.1016/j.jmmm.2011.11.038
• [3] A. Brand, Nucl. Instrum. Methods Phys. Res. B 28, 398 (1987), doi: 10.1016/0168-583X(87)90182-0
• [4] S.K. Banerjee, Phys. Lett. 12, 16 (1964), doi: 10.1016/0031-9163(64)91158-8
• [5] V.K. Pecharsky, K.A. Gschneider Jr, J. Magn. Magn. Mater. 200, 44 (1999), doi: 10.1016/S0304-8853(99)00397-2
• [6] M. Miglerini, J.M. Greneche, J. Phys. Condens. Matter 9, 2303 (1997), doi: 10.1088/0953-8984/9/10/017
• [7] I. Škorvánek, J. Kováč, J. Marcin, P. Švec, D. Janičkovič, Mater. Sci. Eng. A 448, 460 (2006), doi: 10.1016/j.msea.2006.02.353

Identifiers

DOI

10.12693/APhysPolA.127.606