Microstructure and magnetocaloric properties of melt-extracted La–Fe–Si microwires

Dong, Jiankun; Yan, Aru; Liu, J.

doi:10.1016/j.jmmm.2014.01.031

Cited by 25 publications

(9 citation statements)

References 27 publications

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“…Dy 3 Ga 3 O 12 and Gd 3 Ga 3 O 12 have been used as refrigerants in MR [2] . Moreover, the series of refrigerants with first-order magnetic transition (FOMT) such as La(Fe,Si) [3] , Gd(GeSi) [4] and MnFePAs [5] alloys and with second-order magnetic transition (SOMT) e.g. pure Gd [6] , Gd-based [7] and Dy-based [8] alloys are developed for MR which applied in liquid nitrogen or room temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…Gd is a unique member of the lanthanide series with large magnetic moment and its ground-state electronic configuration is 4f [7] (5d6s) [3][4][5][6][7][8][9] . In contrast to other rare earth metals, Gd has no orbital momentum, leading to a relatively small magnetocrystalline anisotropy and a wide composition range which is possible by alloying predominantly magnetic 3d transition elements 10 .…”

Section: Introductionmentioning

confidence: 99%

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Magnetocaloric Effect in Uncoated Gd55Al20Co25 Amorphous Wires

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetocaloric Effect in Uncoated Gd55Al20Co25 Amorphous Wires

et al. 2015

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“…They are mainly based to a reduction of the grain size and an intimate contact between the various phases obtained as cast to shorten the diffusion path. Among these methods, one can find melt-spinning [19][20][21][22][23], melt extraction [24], drop-tube solidification [25], and solid state sintering [26]. Gas atomization, followed by an annealing treatment of 1 hour at 1323 K, has been developed by Erasteel Company, in order to produce batches of 500 kg of alloys for industrial applications [27].…”

Section: Sample Synthesismentioning

confidence: 99%

Tuning the Magnetocaloric Properties of the La(Fe,Si)13 Compounds by Chemical Substitution and Light Element Insertion

Paul‐Boncour

Bessaïs

2021

Magnetochemistry

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LaFe13−xSix compounds exhibit a giant magnetocaloric effect and they are considered as a good magnetocaloric working substance for an environmentally friendly cooling technique. Nevertheless as the Curie temperature TC is around 200 K, it is necessary to tune TC near room temperature for magnetic refrigeration. In this work we present a review of the various methods of synthesis and shaping of the LaFe13−xSix type compounds as well as the influence of chemical substitution, light element insertion or combination of both on TC, magnetic entropy and adiabatic temperature variation (ΔSM and ΔTad), and stability upon cycling. The advantages and drawbacks of each method of preparation and type of element substitution/insertion are discussed. The implementation of these NaZn13 type materials in active magnetic refrigerator is presented and their performances are compared to that of Gd in prototypes.

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“…For some MCE, the low working temperature span (ΔT FWHM ) and high thermal and magnetic hysteresis loss [86,87] limit their applications. MCM with reduced dimensions (particle, microwire, film, or foam) [88,89] have been proposed to broaden the ΔT FWHM by preparing the alloy with gradient composition distribution state. In addition, deduction in dimensions is an effect way to decrease the hysteresis loss by reducing internal stress and the constraints between grains attributed to the high surface-area-to-volume ratio [19].…”

Section: Mfis In Ni-mn-ga Microwiresmentioning

confidence: 99%

Ferromagnetic Shape Memory Alloys: Foams and Microwires

Zhang¹,

Qian²

2017

Shape Memory Alloys - Fundamentals and Applications

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Ferromagnetic shape memory alloys exhibit martensite transformation (MT) and magnetic transition and thus may be actuated by thermal and magnetic fields. The working frequency of these alloys may be higher than conventional shape memory alloys, such as Ni-Ti, because the magnetic field may operate at higher frequency. This chapter focuses on some fundamental topics of these multifunctional materials, including the composition-structure relationship, the synthesis of the foams and microwires, the martensite transformation and magnetic transition characters, the properties (magneticfield-induced strain (MFIS), magnetocaloric effects (MCEs), shape memory effects, and superelastic effects), and applications. The improvement of the magnetic-field-induced strain due to the reduced constraint of twin boundary motion caused by grain boundaries in polycrystalline Ni-Mn-Ga foams and the size effects of the superelasticity and magnetocaloric properties in Ni-Mn-X (X = In, Sn, Sb) microwires are detailed and addressed.

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Microstructure and magnetocaloric properties of melt-extracted La–Fe–Si microwires

Cited by 25 publications

References 27 publications

Magnetocaloric Effect in Uncoated Gd55Al20Co25 Amorphous Wires

Magnetocaloric Effect in Uncoated Gd55Al20Co25 Amorphous Wires

Tuning the Magnetocaloric Properties of the La(Fe,Si)13 Compounds by Chemical Substitution and Light Element Insertion

Ferromagnetic Shape Memory Alloys: Foams and Microwires

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