Existence of cryogenic magnetic entropy change in Gd based nanoparticles

Автор(и)

  • A. Zeleňáková Institute of Physics, Faculty of Sciences, P.J. Šafárik University Park Angelinum 9, Košice 041 54, Slovakia
  • P. Hrubovčák Institute of Physics, Faculty of Sciences, P.J. Šafárik University Park Angelinum 9, Košice 041 54, Slovakia
  • A. Berkutova Institute of Physics, Faculty of Sciences, P.J. Šafárik University Park Angelinum 9, Košice 041 54, Slovakia
  • O. Kapusta Institute of Physics, Faculty of Sciences, P.J. Šafárik University Park Angelinum 9, Košice 041 54, Slovakia
  • V. Zeleňák Institute of Inorganic Chemistry, Faculty of Sciences, P.J. Šafárik University Moyzesova 11, Košice 041 54, Slovakia

DOI:

https://doi.org/10.1063/1.4985974

Ключові слова:

nanoparticles, magnetocaloric effect, magnetic entropy change.

Анотація

Magnetic nanoparticles with average diameter of 5–7 nm were prepared by nanocasting method inside of the pores of periodic silica matrix of SBA15 type. The uniform size of the pores limited the particles’ growth what resulted in formation of nanocomposite consisting of monodisperse nanoparticles of Gd2O3 embedded in amorphous silica matrix. Magnetic properties of the material were examined in magnetic fields up to 5 T and in temperature range 2–52 K. The magnetic entropy change of 29 J/kg⋅K was observed at 2 K for field variation 5 T in the investigated nanocomposite what suggests this material could be feasible for cryomagnetic refrigeration applications.

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Опубліковано

2017-04-13

Як цитувати

(1)
Zeleňáková, A.; Hrubovčák, P.; Berkutova, A.; Kapusta, O.; Zeleňák, V. Existence of Cryogenic Magnetic Entropy Change in Gd Based Nanoparticles. Fiz. Nizk. Temp. 2017, 43, 867-870.

Номер

Том 43 № 6 (2017)

Розділ

Низькотемпературний магнетизм