Implementation of La(Fe, Co)13−xSix materials in magnetic refrigerators: Practical aspects

Ballı, M.; Sari, Osmann; Zamni, L.; Mahmed, Cyril; Forchelet, J.

doi:10.1016/j.mseb.2012.03.016

Cited by 48 publications

(29 citation statements)

References 31 publications

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“…Previous studies have demonstrated that the demagnetization effect is considerably large and cannot be ignored in the determination of true MCE2425. Assuming the internal field H int is homogeneous across the non-ellipsoidal sample, the average internal field can be estimated by subtracting the demagnetization field H d = N d M from the external field H ext ,…”

Section: Discussionmentioning

confidence: 99%

Giant rotating magnetocaloric effect induced by highly texturing in polycrystalline DyNiSi compound

Zhang

Liu

et al. 2015

Sci Rep

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Large rotating magnetocaloric effect (MCE) has been observed in some single crystals due to strong magnetocrystalline anisotropy. By utilizing the rotating MCE, a new type of rotary magnetic refrigerator can be constructed, which could be more simplified and efficient than the conventional one. However, compared with polycrystalline materials, the high cost and complexity of preparation for single crystals hinder the development of this novel magnetic refrigeration technology. For the first time, here we observe giant rotating MCE in textured DyNiSi polycrystalline material, which is larger than those of most rotating magnetic refrigerants reported so far. This result suggests that DyNiSi compound could be attractive candidate of magnetic refrigerants for novel rotary magnetic refrigerator. By considering the influence of demagnetization effect on MCE, the origin of large rotating MCE in textured DyNiSi is attributed to the coexistence of strong magnetocrystalline anisotropy and highly preferred orientation. Our study on textured DyNiSi not only provides a new magnetic refrigerant with large rotating MCE for low temperature magnetic refrigeration, but also opens a new way to exploit magnetic refrigeration materials with large rotating MCE, which will be highly beneficial to the development of rotating magnetic refrigeration technology.

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Section: Discussionmentioning

confidence: 99%

Giant rotating magnetocaloric effect induced by highly texturing in polycrystalline DyNiSi compound

Zhang

Liu

et al. 2015

Sci Rep

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“…Functional magnetocaloric materials at room temperature have attracted worldwide interest over the last two decades due to their potential implementation as refrigerants in magnetic cooling systems [1][2][3][4][5][6][7][8][9][10][11][12][13]. However, the search for materials with excellent magnetocaloric properties in the temperature range from about 2 to 30 K is of great interest from fundamental, practical, and economical points of view, due to their potential use as refrigerants in several low temperature applications such as the space industry, scientific instruments, and gas liquefaction [14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Anisotropic Magnetocaloric Effect in RMn2O5 Single Crystals

et al. 2017

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Thanks to the strong magnetic anisotropy shown by the multiferroic RMn 2 O 5 (R = magnetic rare earth) compounds, a large adiabatic temperature change can be induced (around 10 K) by rotating them in constant magnetic fields instead of the standard magnetization-demagnetization method. Particularly, the TbMn 2 O 5 single crystal reveals a giant rotating magnetocaloric effect (RMCE) under relatively low constant magnetic fields reachable by permanent magnets. On the other hand, the nature of R 3+ ions strongly affects their RMCEs. For example, the maximum rotating adiabatic temperature change exhibited by TbMn 2 O 5 is more than five times larger than that presented by HoMn 2 O 5 in a constant magnetic field of 2 T. In this paper, we mainly focus on the physics behind the RMCE shown by RMn 2 O 5 multiferroics. We particularly demonstrate that the rare earth size could play a crucial role in determining the magnetic order, and accordingly, the rotating magnetocaloric properties of RMn 2 O 5 compounds through the modulation of exchange interactions via lattice distortions. This is a scenario that seems to be supported by Raman scattering measurements.

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“…The corrosion behavior of this materials drastically affects the performances of magnetocaloric effect and lifetime. It is important to note that the production of anti-corrosion coatings on a La-Fe-Si type materials surface is not a satisfactory solution, since such coatings negatively affect thermal barriers, which can lead to cracks due to volume changes [19,22]. The method that beneficially affect on corrosion resistance is to change the chemical composition in such a way that the passive layers formed on the surface will be more stable and the same has better protective properties.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Comparative Characteristics of La(Fe,Si)13 Type Materials with Different Content of Co in Acidified Phosphate Environment in Presence of Cl- Ions

Klimecka-Tatar

Pawłowska²,

Radomska³

et al. 2019

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In the paper the electrochemical characteristics of alloys based on La(Fe,Si)13 phase have been presented. The material for research was the LaFe11.8-xCoxSi1.2 alloy with different cobalt content. Presented electrochemical characteristics provide information about pitting corrosion. This kind of corrosion is one of the most common local corrosion, it is especially undesirable for multi-phase alloys based on rare earth elements, as it contributes to the sudden and unexpected destruction of the surface of the material in working conditions. In the paper the results of potentiokinetic corrosion tests determined for LaFe10.72Co1.08Si1.2 and LaFe11.00Co0.8Si1.2 alloys in acidified phosphate solution (pH = 3) with different addition of chloride ions (Cl-) have been presented. Also analysis of alloys surface before and after corrosion measurement have been presented. The surface analysis have been carried out on the basis of profilometric roughness tests and optical microscopy observation. The studies have shown low resistance of LaFe10.72Co1.08Si1.2 and LaFe11.00Co0.8Si1.2 alloys to pitting corrosion, which, however, increases with Co content increase. DOI: http://dx.doi.org/10.5755/j01.ms.25.3.19536

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Implementation of La(Fe, Co)13−xSix materials in magnetic refrigerators: Practical aspects

Cited by 48 publications

References 31 publications

Giant rotating magnetocaloric effect induced by highly texturing in polycrystalline DyNiSi compound

Giant rotating magnetocaloric effect induced by highly texturing in polycrystalline DyNiSi compound

Analysis of the Anisotropic Magnetocaloric Effect in RMn2O5 Single Crystals

Electrochemical Comparative Characteristics of La(Fe,Si)13 Type Materials with Different Content of Co in Acidified Phosphate Environment in Presence of Cl- Ions

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