Active Magnetic Regeneration Behavior of Spherical Hydrogenated La(Fe0.86Si0.14)13 Fabricated by Rotating Electrode Process

Fujita, Akira; Koiwai, S.; Fujieda, Shun; Fukamichi, K.; Kobayashi, Toshio; Tsuji, Hirofumi; Kaji, Shiori; Saito, Akio

doi:10.1143/jjap.46.l154

Cited by 37 publications

(32 citation statements)

References 22 publications

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“…Zimm et al [72] carried out a preliminary test by using irregular La(Fe 0.88 Si 0.12 ) 13 H 1.0 particles of 250∼500 μm in size as refrigerants in a rotary magnetic refrigerator (RMR) and found that cooling capacity of La(Fe 0.88 Si 0.12 ) 13 H 1.0 compares favorably with that of Gd. Fujita et al [73] tested the hydrogenated La(Fe 0.86 Si 0.14 ) 13 spheres with an average diameter of 500μm in an AMR-type test module, and observed a clear difference in temperature between both the ends of the AMR bed. The temperature span of 16K was achieved in a steady state.…”

Section: Progress In Practical Applicationsmentioning

confidence: 99%

Recent Progress in Exploring Magnetocaloric Materials

et al. 2009

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Magnetic refrigeration based on the magnetocaloric effect (MCE) of materials is a potential technique that has prominet advantages over the currently used gas compression-expansion technique in the sense of its high efficiency and environment friendship. In this article, our recent progress in explorating effective MCE materials is reviewed with the emphasis on the MCE in the LaFe 13-x Si x -based alloys with a first order magnetic transition discovered by us. These alloys show large entropy changes in a wide temperature range near room temperature. Effects of magnetic rare-earth doping, interstitial atom, and high pressure on the MCE have been systematically studied. Special issues such as appropriate approaches to determining the MCE associated with the first-order magnetic transition, the depression of magnetic and thermal hystereses, and the key factors determining the magnetic exchange in alloys of this kind are discussed. The applicability of the giant MCE materials to the magnetic refrigeration near ambient temperature is evaluated. A brief review of other materials with significant MCE is also presented in the article.

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Section: Progress In Practical Applicationsmentioning

confidence: 99%

Recent Progress in Exploring Magnetocaloric Materials

et al. 2009

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“…It is reported that LaFe 13−x Si x (1.3 ≤ x ≤ 2.6) and related compounds with cubic NaZn 13 -type structure are one of the most promising magnetic refrigerants [3][4][5][6][7][8][9][10][11][12][13][14][15]. However, cubic NaZn 13 -type structure of LaFe 13−x Si x compounds is hardly formed by common solidification process due to the intrinsic incompleteness of a peritectic reaction, ␥-Fe + L → La(Fe,Si) 13 ( 1a ), which often results in the mixed microstructure of ␥-Fe + La(Fe,Si) 13 ( 1a ) + LaFeSi( 4 ) [16].…”

Section: Introductionmentioning

confidence: 99%

“…Liu et al [8] and Yan et al [9] reported that the NaZn 13 -type structure of LaFe 13−x Si x compounds could be obtained by melt-spinning and subsequent annealing among 1273-1323 K in a short time (20 min to 2 h). And then Fujita et al [10] successfully prepared * Corresponding author. Tel.…”

Section: Introductionmentioning

confidence: 99%

Structure and magnetic properties of shortly high temperature annealing LaFe11.6Si1.4 compound

Liu

Chen

Tang

et al. 2009

Journal of Alloys and Compounds

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“…Temperature dependence of magnetic entropy change, S m in spherical particles of Gd, La(Fe 0.86 Si 0.14 ) 13 H 1.2 [17] and La(Fe 0.85 Co 0.07 Si 0.08 ) 13 (these La(Fe,Si) 13 -based compounds are referred to collectively as LaFeSi) under an external field of µ 0 H ext = 0.8 T are summarized in Fig. 3.…”

Section: Resultsmentioning

confidence: 99%

Cooling Properties of Gd Alloys and La(Fe,Si)13-Based Compounds in Active Magnetic Refrigeration for Environmentally-Friendly Cooling Systems

Saito¹,

Kobayashi²,

Fukuda³

et al. 2016

IJESD

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Abstract-There is currently a global demand for highly-efficient and environmentally-friendly refrigeration techniques. The new concept of active magnetic regenerative (AMR) refrigeration has received much attention as a potential alternative to conventional gas expansion cooling. In the present study, Gd alloys and La(Fe,Si) 13 -based compounds, both of which have been considered as likely candidates for solid magnetic refrigerants, were investigated in terms of their cooling properties in an AMR-cycle system. As a results, feature of the cooling properties with both materials were clarified. The Gd alloys are evidently suitable for the generation of large temperature differences, in contrast to the La(Fe,Si) 13 -based compounds, which exhibit good heat-load properties. Numerical calculations support these experimental results and indicate that multi-layered structures composed of the La(Fe,Si) 13 -based compounds with gradually varying Curie temperatures are effective at increasing the temperature difference and also demonstrate good heat-load properties. The optimization of magnetic refrigerants such as these is expected to result in new environmentally-friendly cooling systems.

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Active Magnetic Regeneration Behavior of Spherical Hydrogenated La(Fe_0.86Si_0.14)₁₃ Fabricated by Rotating Electrode Process

Cited by 37 publications

References 22 publications

Recent Progress in Exploring Magnetocaloric Materials

Recent Progress in Exploring Magnetocaloric Materials

Structure and magnetic properties of shortly high temperature annealing LaFe11.6Si1.4 compound

Cooling Properties of Gd Alloys and La(Fe,Si)13-Based Compounds in Active Magnetic Refrigeration for Environmentally-Friendly Cooling Systems

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