Critical behavior and tunable magnetocaloric effect in (Gd1-xErx)3Al2 alloys

被引：0

作者：

Jiang, Lina ^{[1
,2
]}

Hu, Cuicui ^{[1
,2
]}

Chen, Yang ^{[2
,3
]}

Tang, Fang ^{[2
,3
]}

Chen, Haifeng ^{[2
,4
]}

Xia, Zilu ^{[2
,5
]}

Fang, Yong ^{[2
]}

Qian, Bin ^{[2
]}

Xuan, Haicheng ^{[1
]}

Han, Zhida ^{[2
]}

机构：

[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China

[2] Changshu Inst Technol, Sch Phys & Elect Engn, Jiangsu Lab Adv Funct Mat, Changshu 215500, Peoples R China

[3] Soochow Univ, Sch Phys Sci & Technol, Jiangsu Key Lab Thin Films, Suzhou 215006, Peoples R China

[4] Suzhou Univ Sci & Technol, Key Lab Efficient Low Carbon Energy Convers & Util, Sch Phys Sci & Technol, Suzhou 215009, Peoples R China

[5] Yangzhou Univ, Coll Phys Sci & Technol, Yangzhou 225002, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2024年 / 611卷

基金：

中国国家自然科学基金;

关键词：

(Gd 1; x Er x ) 3 Al 2 alloy; Second-order transition; Magnetocaloric effect; Refrigerant capacity; Critical phenomena; FIELD-DEPENDENCE; MAGNETIC PHASE; ENTROPY; FERROMAGNETS; TRANSITIONS; NICKEL; RANGE;

D O I：

10.1016/j.jmmm.2024.172606

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic properties, magnetocaloric effect, and the critical behavior near Curie temperature (TC) were systematically studied in a series of (Gd1-xErx)3Al2 (x = 0, 0.1, 0.2, 0.3) alloys. As the Er content increases, both the TC and lattice constant gradually decrease. The maximum magnetic entropy change and refrigerant capacity remain relatively high, ranging from -5.8 to -8.5J/kg K and 209.0 to 290.8 J/kg respectively, for a field change of 5 T. The critical exponents, derived from the field dependence of magnetic entropy change, conform to scaling theory and are consistent with those obtained using the Kouvel-Fisher method. These findings suggest that the reliability of the obtained critical exponents and imply the presence of long-range exchange interactions in (Gd1-xErx)3Al2 alloys.

引用

页数：9

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