Magnetocaloric Effect in Gd₂O₃@SiO₂ Nanocomposite

• Authors: A. Zeleňáková , P. Hrubovčák , A. Berkutova , O. Kapusta , V. Zeleňák
• Languages of publication: EN

Abstracts

EN

Nanocomposite consisting of Gd₂O₃ nanoparticles embedded in periodical porous silica matrix was investigated with respect to its magnetocaloric properties. Series of field (up to 5 T) dependence of magnetization data were recorded in temperature range 2-52 K. The data were subsequently processed employing Maxwell relation in order to calculate magnetic entropy change (Δ S_M) of the system. Examined nanocomposite exhibited reasonably high value of Δ S_M ≈ 29 J/(kg K) at maximal field change 5 T at the temperature of 2 K which suggests that this material could be feasible for cryomagnetic refrigeration applications.

Keywords

EN

75.30.Sg; 81.05.Rm; 75.20.Ck; 75.75.Fk

Discipline

• 75.20.Ck: Nonmetals
• 75.30.Sg: Magnetocaloric effect, magnetic cooling(for cryogenics, see 07.20.Mc)
• 81.05.Rm: Porous materials; granular materials(for granular superconductors, see 74.81.Bd)
• 75.75.Fk: Domain structures in nanoparticles

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 810-812

Dates

published

2017-04

Contributors

author

A. Zeleňáková

• Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia

author

P. Hrubovčák

• Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia

author

A. Berkutova

• Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia

author

O. Kapusta

• Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia

author

V. Zeleňák

• Institute of Inorganic Chemistry, Faculty of Sciences, P.J. Šafárik University, Moyzesova 11, 041 54 Košice, Slovakia

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Identifiers

DOI

10.12693/APhysPolA.131.810