On the direct measurement of the adiabatic temperature change of magnetocaloric materials

2020 ◽  
Vol 127 (12) ◽  
pp. 123901 ◽  
Author(s):  
F. Cugini ◽  
M. Solzi
Keyword(s):  
Temperature Change ◽  
Direct Measurement ◽  
Adiabatic Temperature ◽  
Adiabatic Temperature Change ◽  
Magnetocaloric Materials

scholarly journals Comment on “Direct Measurement of the `Giant' Adiabatic Temperature Change inGd5Si2Ge2”

2000 ◽  
Vol 85 (19) ◽  
pp. 4190-4190 ◽  
Author(s):  
K. A. Gschneidner ◽  
V. K. Pecharsky ◽  
E. Brück ◽  
H. G. M. Duijn ◽  
E. M. Levin
Keyword(s):  
Temperature Change ◽  
Direct Measurement ◽  
Adiabatic Temperature ◽  
Adiabatic Temperature Change

High-throughput characterization of the adiabatic temperature change for magnetocaloric materials

2020 ◽  
Vol 56 (3) ◽  
pp. 2332-2340
Author(s):  
Kun Wang ◽  
Yi Ouyang ◽  
Yi Shen ◽  
Yifei Zhang ◽  
Mingxiao Zhang ◽  
...  
Keyword(s):  
Temperature Change ◽  
High Throughput ◽  
Adiabatic Temperature ◽  
Adiabatic Temperature Change ◽  
Magnetocaloric Materials

Direct Measurement of the “Giant” Adiabatic Temperature Change inGd5Si2Ge2

1999 ◽  
Vol 83 (11) ◽  
pp. 2262-2265 ◽  
Author(s):  
A. Giguère ◽  
M. Foldeaki ◽  
B. Ravi Gopal ◽  
R. Chahine ◽  
T. K. Bose ◽  
...  
Keyword(s):  
Temperature Change ◽  
Direct Measurement ◽  
Adiabatic Temperature ◽  
Adiabatic Temperature Change

Large electrocaloric response with superior temperature stability in NaNbO3-based relaxor ferroelectrics benefiting from crossover region

2020 ◽  
Author(s):  
Ling Zhang ◽  
Chunlin Zhao ◽  
Ting Zheng ◽  
Jiagang Wu
Keyword(s):  
Temperature Change ◽  
Temperature Stability ◽  
Relaxor Ferroelectrics ◽  
Adiabatic Temperature ◽  
Next Generation ◽  
Crossover Region ◽  
Adiabatic Temperature Change

Electrocaloric refrigeration emerges as a newly-developing technology with potential to be the next generation of coolers. However, the combination of large adiabatic temperature change (ΔT) and good temperature stability remains...

scholarly journals Tunable Magnetocaloric Properties of Gd-Based Alloys by Adding Tb and Doping Fe Elements

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2877 ◽  
Author(s):  
Lingfeng Xu ◽  
Chengyuan Qian ◽  
Yongchang Ai ◽  
Tong Su ◽  
Xueling Hou
Keyword(s):  
Magnetic Field ◽  
Curie Temperature ◽  
Temperature Change ◽  
Indirect Measurement ◽  
Adiabatic Temperature ◽  
Doping Content ◽  
Adiabatic Temperature Change ◽  
Magnetocaloric Properties ◽  
Capacity Calculation ◽  
Low Magnetic Field

In this paper, the magnetocaloric properties of Gd1−xTbx alloys were studied and the optimum composition was determined to be Gd0.73Tb0.27. On the basis of Gd0.73Tb0.27, the influence of different Fe-doping content was discussed and the effect of heat treatment was also investigated. The adiabatic temperature change (ΔTad) obtained by the direct measurement method (under a low magnetic field of 1.2 T) and specific heat capacity calculation method (indirect measurement) was used to characterize the magnetocaloric properties of Gd1−xTbx (x = 0~0.4) and (Gd0.73Tb0.27)1−yFey (y = 0~0.15), and the isothermal magnetic entropy (ΔSM) was also used as a reference parameter for evaluating the magnetocaloric properties of samples together with ΔTad. In Gd1−xTbx alloys, the Curie temperature (Tc) decreased from 293 K (x = 0) to 257 K (x = 0.4) with increasing Tb content, and the Gd0.73Tb0.27 alloy obtained the best adiabatic temperature change, which was ~3.5 K in a magnetic field up to 1.2 T (Tc = 276 K). When the doping content of Fe increased from y = 0 to y = 0.15, the Tc of (Gd0.73Tb0.27)1−yFey (y = 0~0.15) alloys increased significantly from 276 K (y = 0) to 281 K (y = 0.15), and a good magnetocaloric effect was maintained. The annealing of alloys (Gd0.73Tb0.27)1−yFey (y = 0~0.15) at 1073 K for 10 h resulted in an average increase of 0.3 K in the maximum adiabatic temperature change and a slight increase in Tc. This study is of great significance for the study of magnetic refrigeration materials with adjustable Curie temperature in a low magnetic field.

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