Existence of cryogenic magnetic entropy change in Gd based nanoparticles

被引：1

作者：

Zelenakova, A. ^{[1
]}

Hrubovcak, P. ^{[1
]}

Berkutova, A. ^{[1
]}

Kapusta, O. ^{[1
]}

Zelenak, V. ^{[2
]}

机构：

[1] Safarik Univ, Fac Sci, Inst Phys, Pk Angelinum 9, Kosice 04154, Slovakia

[2] Safarik Univ, Fac Sci, Inst Inorgan Chem, Moyzesova 11, Kosice 04154, Slovakia

来源：

LOW TEMPERATURE PHYSICS | 2017年 / 43卷 / 06期

关键词：

SILICA;

D O I：

10.1063/1.4985974

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. Published by AIP Publishing.

引用

页码：689 / 691

页数：3

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