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Magnetocaloric Effect in Gd₂O₃@SiO₂ Nanocomposite

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Zeleňáková A., Hrubovčák P., Berkutova A., Kapusta O., Zeleňák V.
Acta Physica Polonica A
|
2017
|
vol. 131
|
issue 4
810-812
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.
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