Low Field Magnetocaloric Properties in Potassium-Doped (La, Sr)MnO3 Manganese Oxides

被引：1

作者：

Cha, Jongchol ^{[1
]}

Jon, Jinhyok ^{[2
]}

Ri, Gwangwon ^{[3
]}

Thae, Wonhyok ^{[4
]}

机构：

[1] Kim Hyong Jik Normal Univ, Dept Phys, Pyongyang, North Korea

[2] Pyongyang Univ Mech Engn, Dept Informat Engn, Pyongyang, North Korea

[3] Univ Sci, Dept Math, Pyongyang, North Korea

[4] Kim Chaek Univ Technol, Dept Thermal Engn, Pyongyang, North Korea

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2023年 / 210卷 / 1-2期

关键词：

Magnetocaloric effect; Magnetic entropy change; Manganese oxide; Phenomenological model; MAGNETIC ENTROPY CHANGE; PREDICTION;

D O I：

10.1007/s10909-022-02903-9

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The influence of potassium (K) doping on the magnetic and magnetocaloric effect of the perovskite-type manganese oxides La0.6Sr0.4-xKxMnO3 in low magnetic field has been investigated. Our work shows that the maximum magnetization and the Curie temperature of La0.6Sr0.4-xKxMnO3 (x = 0.10, 0.15, 0.20) decrease with increasing K content. Using Hamad's phenomenological model, we have estimated the important magnetocaloric properties such as the magnetic entropy change and the relative cooling power. Tunable Curie temperature and considerable magnetocaloric properties of these manganese oxides are advantageous for applications in sub-room and near-room temperature magnetic refrigeration.

引用

页码：347 / 356

页数：10

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