Magnetic entropy change in Fe74−xCrxCu1Nb3Si13B9 (x=14 and 17) amorphous alloys

2005 ◽  
Vol 351 (30-32) ◽  
pp. 2373-2377 ◽  
Author(s):  
S. Atalay ◽  
H. Gencer ◽  
V.S. Kolat
Keyword(s):  
Amorphous Alloys ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy

scholarly journals Effect of Co/Ni Substituting Fe on Magnetocaloric Properties of Fe-Based Bulk Metallic Glasses

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 950
Author(s):  
Jia Guo ◽  
Lei Xie ◽  
Cong Liu ◽  
Qiang Li ◽  
Juntao Huo ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Amorphous Alloys ◽  
Magnetic Entropy Change ◽  
Bulk Metallic Glasses ◽  
Entropy Change ◽  
Magnetic Entropy ◽  
Glass Forming ◽  
Magnetic Refrigerant ◽  
Magnetocaloric Properties ◽  
Curie Temperature Tc

In this work, Fe80-xMxP13C7 (M = Co, Ni; x = 0, 5 and 10 at.%) bulk metallic glasses (BMGs) were prepared, and the effect of the Co/Ni elements substitution for Fe on the magnetocaloric properties of Fe80P13C7 BMG has been investigated systematically. The Curie temperature (TC) of the present Fe-based BMGs increases with the substitution of Fe by Co/Ni. The magnetic entropy change (ΔSM) of the present Fe-based BMGs increases first and then decreases with the increase of Fe substituted by Co, but monotonically decreases with the increase of Fe substituted by Ni. Among the present Fe-based BMGs, the Fe75Co5P13C7 BMG exhibits the maximum ΔSM value of 5.21 J kg−1 K−1 at an applied field of 5 T, which is the largest value among Fe-based amorphous alloys without any rare earth elements reported so far. The present Fe-based BMGs exhibit the large glass forming ability, tunable TC and enhanced ΔSM value, which are beneficial for magnetic refrigerant materials.

scholarly journals Compositional Dependence of Curie Temperature and Magnetic Entropy Change in the Amorphous Tb–Co Ribbons

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1002
Author(s):  
Xin Wang ◽  
Ding Ding ◽  
Li Cui ◽  
Lei Xia
Keyword(s):  
Curie Temperature ◽  
Linear Relationship ◽  
Metallic Glasses ◽  
Amorphous Alloys ◽  
Magnetic Entropy Change ◽  
Alloy Composition ◽  
Entropy Change ◽  
Magnetic Entropy ◽  
Compositional Dependence ◽  
Curie Temperature Tc

The Curie temperature (Tc) and magnetic entropy change (−ΔSm), and their relationship to the alloy composition of Tb–Co metallic glasses, were studied systematically in this paper. It was found that, in contrast to the situation in amorphous Gd–Co ribbons, the dependence of Tc on Tb content and the maximum −ΔSm vs. Tc -2/3 plots in Tb–Co binary amorphous alloys do not follow a linear relationship, both of which are supposed to be closely related to the non-linear compositional dependence of Tb–Co interaction due to the existence of orbital momentum in Tb.

Enhanced Curie temperature and magnetic entropy change of Gd50Co50−xNix amorphous alloys

2019 ◽  
Vol 34 (04) ◽  
pp. 2050050 ◽  
Author(s):  
M. N. Song ◽  
L. W. Huang ◽  
B. Z. Tang ◽  
D. Ding ◽  
Q. Zhou ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloy ◽  
Curie Temperature ◽  
Binary Alloy ◽  
Metallic Glasses ◽  
Amorphous Alloys ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy ◽  
Ni Addition

Small amount of Ni was added in the [Formula: see text] binary alloy to replace the Co element for improving the formability and magnetic properties of the binary amorphous alloy. It was found that the glass formability of the [Formula: see text] amorphous alloy was significantly improved by Ni addition. The Curie temperature [Formula: see text] of the [Formula: see text] metallic glasses decreases with the Ni addition, and the maximum magnetic entropy change [Formula: see text] was also improved. The mechanism for the effect of adding a small quantity of Ni on the [Formula: see text] and [Formula: see text] of the [Formula: see text] amorphous alloy was studied.

Investigation of critical behavior in Pr0.55Sr0.45MnO3 by using the field dependence of magnetic entropy change

2011 ◽  
Vol 98 (7) ◽  
pp. 072508 ◽  
Author(s):  
Jiyu Fan ◽  
Li Pi ◽  
Lei Zhang ◽  
Wei Tong ◽  
Langsheng Ling ◽  
...  
Keyword(s):  
Field Dependence ◽  
Critical Behavior ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy

The Sintering Effect of Magnetic Entropy Change on ${\rm Ba}_{2}{\rm FeMoO}_{6}$

2011 ◽  
Vol 47 (10) ◽  
pp. 2474-2477 ◽  
Author(s):  
K. S. Kim ◽  
M. S. Lee ◽  
S. C. Yu ◽  
B. W. Lee ◽  
B. S. Kang
Keyword(s):  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy ◽  
Sintering Effect

Large magnetic entropy change at cryogenic temperature in rare earth HoN nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (79) ◽  
pp. 75562-75569 ◽  
Author(s):  
K. P. Shinde ◽  
S. H. Jang ◽  
M. Ranot ◽  
B. B. Sinha ◽  
J. W. Kim ◽  
...  
Keyword(s):  
Rare Earth ◽  
Low Temperature ◽  
Magnetocaloric Effect ◽  
Cryogenic Temperature ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Environmental Problems ◽  
Magnetic Refrigeration ◽  
Magnetic Entropy ◽  
Alternative Technology

The most extensive cooling techniques based on gases have faced environmental problems. The magnetic refrigeration is an alternative technology based on magnetocaloric effect. HoN nanoparticles are good refrigerant material at low temperature.

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