Magnetocaloric Effect in NdNi_4Si Compound

• Authors: M. Falkowski , T. Toliński , A. Kowalczyk
• Languages of publication: EN

Abstracts

EN

On the basis of the thermodynamic approach, we report the magnetocaloric properties of the ternary ferromagnetic NdNi_4Si compound with magnetic phase transition temperature T_{C} at 8 K. The saturated magnetic moment in H = 9 T is equal to 1.5 μ_{B}/f.u. at 4.2 K and the compound crystallizes in the hexagonal CaCu_5-type structure (space group P6/mmm). The magnetocaloric effect was calculated in terms of the isothermal magnetic entropy change Δ S_{M} as well as the adiabatic temperature change Δ T_{ad} using the specific heat data and magnetization measurements. Within the second order phase transition significant values of these parameters have been observed.

Keywords

EN

75.30.Sg; 75.30.Kz; 75.47.Np; 75.40.-s

Discipline

• 75.30.Sg: Magnetocaloric effect, magnetic cooling(for cryogenics, see 07.20.Mc)
• 75.47.Np: Metals and alloys
• 75.40.-s: Critical-point effects, specific heats, short-range order(for equilibrium properties near critical points, see 64.60.F-; for dynamical critical phenomena, see 64.60.Ht)
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1290-1292

Dates

published

2012-05

Contributors

author

M. Falkowski

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

T. Toliński

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

A. Kowalczyk

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.121.1290