scholarly journals Combined giant inverse and normal magnetocaloric effect for room-temperature magnetic cooling

2007 ◽  
Vol 76 (13) ◽  
Author(s):  
Xixiang Zhang ◽  
Bei Zhang ◽  
Shuyun Yu ◽  
Zhuhong Liu ◽  
Wenjin Xu ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Room Temperature ◽  
Magnetic Cooling

Bulk Transition Elements Based Materials for Magnetic Cooling Application

2011 ◽  
Vol 170 ◽  
pp. 248-252 ◽  
Author(s):  
Mohamed Balli ◽  
Osmann Sari ◽  
L. Zamni ◽  
A. Robert ◽  
J. Forchelet ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Composite Material ◽  
Powder Metallurgy ◽  
Magnetocaloric Effect ◽  
Temperature Change ◽  
Room Temperature ◽  
Test Bench ◽  
Transition Elements ◽  
Magnetic Systems ◽  
Magnetic Cooling

In this paper we investigate the performances of two bulk magnetocaloric refrigerants based on La(Fe,Co)13-xSix and prepared by powder metallurgy. Both materials were developed especially for a magnetic cooling machine. We have determined the magnetocaloric effect in term of temperature change under magnetic field using a test-bench with practical running conditions. ΔT was measured under 2 T and close to room temperature range. The obtained results will be compared with those of some reference materials reported in the literature. In addition, a composite material based on La(Fe,Co)13-xSix is proposed for magnetic systems using Ericsson and AMR cycles for refrigeration close to room temperature.

Table-like magnetocaloric effect around room temperature of antiperovskite composite materials based on Mn3Sn1-xGaxC

2021 ◽  
Vol 27 ◽  
pp. 102379
Author(s):  
Congji Jiang ◽  
Jun Yan ◽  
Xiangqian Wang ◽  
Shijie Wei ◽  
Pengli Liang ◽  
...  
Keyword(s):  
Composite Materials ◽  
Magnetocaloric Effect ◽  
Room Temperature

Large magnetocaloric effect and excellent mechanical properties near room temperature in Ni-Co-Mn-Ti non-textured polycrystalline alloys

2021 ◽  
Vol 119 (5) ◽  
pp. 051904
Author(s):  
Ziqi Guan ◽  
Xinjun Jiang ◽  
Jianglong Gu ◽  
Jing Bai ◽  
Xinzeng Liang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Magnetocaloric Effect ◽  
Room Temperature ◽  
Polycrystalline Alloys

Critical behavior and magnetocaloric effect of the quasi-two-dimensional room-temperature ferromagnet Cr4Te5

2020 ◽  
Vol 101 (21) ◽  
Author(s):  
Luo-Zhao Zhang ◽  
An-Lei Zhang ◽  
Xiu-De He ◽  
Xin-Wei Ben ◽  
Qi-Ling Xiao ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Critical Behavior ◽  
Room Temperature ◽  
Two Dimensional

Magnetocaloric and other Properties of Cold Rolled Gd Ribbons

2013 ◽  
Vol 738-739 ◽  
pp. 441-445
Author(s):  
Sergey Taskaev ◽  
Vasiliy D. Buchelnikov ◽  
Anatoliy Pellenen ◽  
Dmitriy Bataev ◽  
Konstantin Skokov ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Heat Capacity ◽  
Magnetocaloric Effect ◽  
Treatment Procedure ◽  
Magnetic Cooling ◽  
Cooling Devices ◽  
Cold Rolled ◽  
Heat Treatment Procedure

In this work we investigate magnetocaloric effect and heat capacity of Gd cold rolled ribbons. Such materials are easy to produce, they are flexible and convenient for using in magnetic cooling devices. It is shown that the magnetocaloric effect is strongly dependent on thickness of the ribbons. Severely rolled ribbons demonstrate rather a small magnetocaloric effect. However, a special heat treatment procedure makes it possible to enhance the effect up to the value observed in polycrystalline Gd.

scholarly journals Magnetocaloric Effect in Nanosystems Based on Ferromagnets with Different Curie Temperatures

2021 ◽  
Vol 132 (1) ◽  
pp. 79-93
Author(s):  
M. A. Kuznetsov ◽  
A. B. Drovosekov ◽  
A. A. Fraerman
Keyword(s):  
Field Theory ◽  
Magnetocaloric Effect ◽  
Landau Theory ◽  
Mean Field Theory ◽  
Mean Field ◽  
Maxwell Relation ◽  
Magnetic Cooling ◽  
The Mean ◽  
Curie Temperatures ◽  
Good Agreement

Abstract The magnetocaloric effect in nanosystems based on exchange-coupled ferromagnets with different Curie temperatures is calculated within the mean-field theory. Good agreement between the results of the mean-field theory and the Landau theory, valid near the critical phase transition temperature, is demonstrated for a flat-layered Fe/Gd/Fe structure. We show that a high magnetic cooling efficiency in this system is attainable in principle and prove the validity of the Maxwell relation, enabling an experimental verification of the predictions made. The theory developed for flat-layered structures is generalized to a granular medium.

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