Mechanism of the giant irreversible positive magnetic entropy change in a Tb-based bulk metallic glass

2012 ◽  
Vol 101 (6) ◽  
pp. 062411 ◽  
Author(s):  
Qiang Luo ◽  
Björn Schwarz ◽  
Norbert Mattern ◽  
Jun Shen ◽  
Jürgen Eckert
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy

Improvement of glass forming ability and magnetic properties of a Gd55Al20Co25 bulk metallic glass by minor Fe substitution for Co

2015 ◽  
Vol 29 (31) ◽  
pp. 1550198 ◽  
Author(s):  
Q. Guan ◽  
P. Yu ◽  
K. C. Chan ◽  
L. Xia
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Glass Forming Ability ◽  
Magnetic Entropy ◽  
Casting Method ◽  
Glass Forming ◽  
Caloric Effect ◽  
Fe Substitution

[Formula: see text] bulk metallic glass (BMG) exhibits good glass forming ability (GFA) and excellent magneto-caloric effect (MCE). In order to further improve the GFA and MCE of the [Formula: see text] BMG, we attempted to add small amount of Fe as a replacement of Co in the BMG and obtained [Formula: see text] glassy rod using a traditional suction casting method. The [Formula: see text] BMG shows a better GFA and MCE than the [Formula: see text] BMG. The magneto-caloric behavior of the [Formula: see text] BMG was investigated by studying the field dependence of the magnetic entropy change peak and the refrigeration capacity.

Irreversible and reversible magnetic entropy change in a Dy-based bulk metallic glass

2012 ◽  
Vol 30 ◽  
pp. 76-79 ◽  
Author(s):  
Qiang Luo ◽  
Björn Schwarz ◽  
Norbert Mattern ◽  
Jürgen Eckert
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy

Effect of minor Fe substitution for Ni on the magnetic properties of a Gd55Al20Ni25 bulk metallic glass

2016 ◽  
Vol 30 (07) ◽  
pp. 1650028
Author(s):  
Ding Ding ◽  
Zheng Li ◽  
Zheng Wen Wang ◽  
Cheng Wu ◽  
Yi Qing Zhang
Keyword(s):  
Magnetic Properties ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Field Range ◽  
Glass Forming ◽  
Refrigerant Capacity ◽  
Caloric Effect ◽  
Fe Substitution

In this work, we studied the effect of micro-alloying on the glass-forming ability (GFA) and magnetic properties of [Formula: see text] bulk metallic glass (BMG). By minor Fe substitution for Ni, we obtained [Formula: see text] BMG with enhanced magneto-caloric effect (MCE) and GFA similar to [Formula: see text] BMG. The maximum magnetic entropy change [Formula: see text] and the magnetic refrigerant capacity ([Formula: see text] of [Formula: see text] BMG within the field range of 5 T are about 9.05 J kg[Formula: see text] K[Formula: see text] and [Formula: see text], respectively, both of which are larger than the values of [Formula: see text] BMG. The mechanism for the improved MCE of the [Formula: see text] BMG was investigated and the magneto-caloric behaviors were studied by constructing the field dependence of [Formula: see text] of [Formula: see text] BMG.

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