Microstructure and its effect on magnetic and magnetocaloric properties of the Co50Gd50-xFex glassy ribbons

被引：26

作者：

Tang, B. Z. ^{[1
,2
,3
]}

Xie, H. X. ^{[1
]}

Li, D. M. ^{[1
]}

Xia, L. ^{[2
,3
]}

Yu, P. ^{[1
]}

机构：

[1] Chongqing Normal Univ, Chongqing Key Lab Photoelect Funct Mat, Coll Phys & Elect Engn, Chongqing 401331, Peoples R China

[2] Shanghai Univ, Lab Microstruct, Shanghai 200072, Peoples R China

[3] Shanghai Univ, Inst Mat, Shanghai 200072, Peoples R China

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2020年 / 533卷

关键词：

Amorphous alloy; Glass formability; Microstructure; Magnetocaloric effect; REFRIGERANT CAPACITY; THERMAL-STABILITY; ROOM-TEMPERATURE; ENTROPY CHANGE; ICE POINT; ALLOY; RANGE; PHASE; WATER; FE;

D O I：

10.1016/j.jnoncrysol.2020.119935

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In the present work, a small amount of Fe was added in the Gd50Co50 binary amorphous alloys and obtained a series of as-spun ribbons with nominal compositions Co50Gd50-xFex (x = 1, 2, 3, 4 and 5). Amongst these ribbons, the Co50Gd50-xFex (x = 1, 2, 3 and 4) ribbons exhibit amorphous characteristics in the X-ray diffraction (XRD) patterns and glassy nature of the samples was confirmed by differential scanning calorimetry (DSC). The XRD confirms the non-crystalline structure and DSC shows the presence of glass transition temperature (T-g), confirming the vitreous properties. However, magnetic measurements indicate that some of the amorphous ribbons show multi-stage magnetic ordering behaviors. Microstructural observation of these amorphous ribbons was carried out to reveal the mechanism involved. The effect of microstructure on the magnetic and magnetocaloric behaviors of the as-spun ribbons was investigated.

引用

页数：5

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