Magnetocaloric effect (MCE) in melt-extracted Ni–Mn–Ga–Fe Heusler microwires

Liu, Yanfen; Zhang, Xuexi; Xing, Dan; Shen, Hongxian; Chen, Dongming; Liu, Jingshun; Sun, Jianfei

doi:10.1016/j.jallcom.2014.07.077

Cited by 38 publications

(17 citation statements)

References 30 publications

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“…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]. [101] alloys, the Ni-Mn-Ga-Cu microwires are rare-earth free and thus cost-effective, which helps for the practical applications.…”

Section: Mfis In Ni-mn-ga Microwiresmentioning

confidence: 99%

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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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Section: Mfis In Ni-mn-ga Microwiresmentioning

confidence: 99%

“…The obtained microwire has a naked surface, which can be directly used in MEMS or NEMS, and acts as building blocks for composites and complex-shaped components. Systematic research works have also been carried out to reveal the superelasticity [14,15], shape memory [12,16], and MCE properties [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Ferromagnetic Shape Memory Alloys: Foams and Microwires

Zhang¹,

Qian²

2017

Shape Memory Alloys - Fundamentals and Applications

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“…Сплавы Гейслера продолжают привлекать внимание исследователей несмотря на то, что они были открыты достаточно давно. Это связано с многообразием различных эффектов и функциональных свойств таких материалов [1][2][3][4][5][6][7]. Существование ферромагнитного эффекта памяти формы [1][2][3][4]8,9], магнетокалорического эффекта [2,[5][6][7]10] и других позволяет использовать магнитные материалы в современной технике и микроэлектронике [11].…”

Section: Introductionunclassified

Эволюция структуры и свойств сплава Ni-=SUB=-47-=/SUB=-Mn-=SUB=-42-=/SUB=-In-=SUB=-11-=/SUB=- после пластической деформации

Калетина¹,

Greshnova²,

Калетин³

2019

Физика Твердого Тела

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Results of the study of the effect of various types of plastic deformation on microstructural features and change in physical and mechanical properties of the nonstoichiometric Heusler alloy Ni_47Mn_42In_11 are shown. It was demonstrated that the deformation by rolling and upsetting leads to an increase in the microhardness and to an embrittlement of the investigated alloy. Severe plastic deformation by torsion under high pressure of 8 GPa at room temperature was found to strongly refine initially coarse grain and to contribute to the formation of a nanocrystalline structure with grain fragments up to 10 nm. In this case, the fraction of viscous constituent on the fracture and the microhardness increased, while the magnetic susceptibility decreased.

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“…These kinds of alloys not only have a very large magneticfieldinduced strain (MFIS) [3] [4]), but also possess other useful properties in regard to martensitic phase transformation, such as their very large magnetocaloric effect (MCE) and strong magnetoresistance (MR) [5][6][7][8][9][10][11][12][13][14][15]. This very large MFIS is due primarily to the rearrangement of martensitic variants, but it is  Corresponding author: Qingxue Huang Email address: qxhuang_pd@163.com obtained only in single crystals.…”

Section: Introductionmentioning

confidence: 99%