Magnetocaloric effect and critical behavior study in NiMnSnIn Heusler alloys

Raji, G. R.; Uthaman, Bhagya; Job, R.; Thomas, Sabu; Суреш, К. Г.; Varma, Manoj Raama

doi:10.1016/j.intermet.2018.06.003

Cited by 3 publications

(3 citation statements)

References 27 publications

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“…[5] In the vast majority of studies, it was discovered that Ni combining Mn and Sn at various compositions has the potential to exhibit favorable properties. [6][7][8][9][10][11][12] When the stoichiometry of the compositions is changed, the alloys go through a phase transition from the L 1 0 martensitic phase to the L2 1 austenitic phase. [12][13][14] A variety of applications involving near-room temperature (25 -35 °C) use of these alloys are possible because of their magnetocaloric, martensitic, and mechanical characteristics.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Annealed Quinary Ni-Mn-Sn-Fe-In Heusler Alloy

S.¹,

Murthy²,

Sharma³

et al. 2022

Eng. Sci.

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The tuning of Heusler alloys with respect to the stoichiometry and their effect on martensitic transformation have been investigated very little by various researchers. Thus, the effect of change in ferrous (Fe) concentration of the alloys and its effect on mechanical and magnetocaloric properties of Ni 50-x Fe x Mn 30 Sn 20-y In y alloys were investigated where Fe was varied from x= 1, 2, 3 and 4 to find its significance. An increase of Fe concentration to Fe 4 leads to a considerable improvement in the alloy's mechanical properties and crystal structure. Compressive strength of the alloy rose by 123% for Fe 4 substitution. When comparing the identical materials with and without Fe addition, the ultimate stress (US) and ductility are improved by 124 and 200%, respectively, while toughness rises by 48 times. The Fe concentration variation also enabled a martensitic transformation in 36.8 to 19.83 °C range of refrigerator applications.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Annealed Quinary Ni-Mn-Sn-Fe-In Heusler Alloy

S.¹,

Murthy²,

Sharma³

et al. 2022

Eng. Sci.

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“…It is known that the austenite always exhibits an L2 1 (B2) cubic structure at high temperature while the martensitic structure at low temperature can vary in Ni-Mn-X (X = Sn, In, Ga and Sb) Heusler alloys. [16][17][18][19] It has been reported that Ga substitution for the X site in Ni-Mn-X (X = Sb, Sn, In) 16,20,21) will tremendously enhance the magnetization difference (DM). This phenomenon can be ascribed to the magnetic moments between the nearest Mn-Mn atoms, while Ga doping gives rise to ferromagnetic alignment instead of the antiferromagnetic alignment.…”

mentioning

confidence: 99%

“…As seen, the inverse MCE only have the DS of 0.7 J kg −1 K under 5 Tesla around martensitic transition, which is smaller than previous reports. 7,20) This is quite special for Heusler alloys, because in most case they display giant MCE in the vicinity of M .…”

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confidence: 99%

The phase transitions and magnetocaloric effects in Ga-doped Heusler Ni₅₀Mn₃₆Sn₁₄ alloys

Cao

Wang

Tian

et al. 2019

Jpn. J. Appl. Phys.

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Recent investigations in the magnetocaloric effect mainly focus on the discovery of new materials exhibiting large refrigeration capacity, tuneable working temperature and negligible hysteresis. In this context, different magnetic phase transitions of Ni50Mn36GaxSn14-x (0 ≤ x ≤ 14) ferromagnetic shape memory alloys have been systematically investigated and the phase diagram with morphotropic phase boundary (MPB) was drawn accordingly. In particular, magnetocaloric effects were calculated and compared in the vicinity of Curie transition, martensitic transition and MPB, respectively. As a result, the magnetocaloric effect of the Ni50Mn36Ga5Sn9 alloy has a wide working temperature range and zero thermal hysteresis at the MPB compared to the effect occurring at other transitions, and the effective refrigeration capacity could reach a compared value 96 J kg−1 in this case.

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Effects of interstitial C atoms on magnetostructural transformation and magnetocaloric effect in MnNi0.77Fe0.23GeCx compounds

Zhou

Zhang

Liu

et al. 2020

Journal of Applied Physics

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In this study, the influence of interstitial C atoms on the magnetostructural transformation and magnetocaloric effect in MnNi0.77Fe0.23GeCx (x = 0, 0.02, and 0.03) compounds has been investigated. The introduction of C atoms into the interstitial sites of the MnNi0.77Fe0.23Ge compounds leads to the enhanced stability of the orthorhombic phase, thus enhancing the structural transition temperature. Moreover, the critical field of antiferromagnetic (AFM)–ferromagnetic (FM) conversion significantly decreases following C atom incorporation. Therefore, it can be inferred that C atoms can promote the AFM–FM conversion in the TiNiSi-type orthorhombic phase. The MnNi0.77Fe0.23GeCx compound with x = 0.02 exhibits a large magnetocaloric effect due to the ferromagnetic magnetostructural transition. Furthermore, for the compound with x = 0.03, a table-like magnetocaloric effect is observed around room temperature owing to the coupling of the martensitic and metamagnetic transitions, which confirms the wide working temperature range and a large refrigerant capacity.

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Magnetocaloric effect and critical behavior study in NiMnSnIn Heusler alloys

Cited by 3 publications

References 27 publications

Microstructure and Mechanical Properties of Annealed Quinary Ni-Mn-Sn-Fe-In Heusler Alloy

Microstructure and Mechanical Properties of Annealed Quinary Ni-Mn-Sn-Fe-In Heusler Alloy

The phase transitions and magnetocaloric effects in Ga-doped Heusler Ni₅₀Mn₃₆Sn₁₄ alloys

Effects of interstitial C atoms on magnetostructural transformation and magnetocaloric effect in MnNi0.77Fe0.23GeCx compounds

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Magnetocaloric effect and critical behavior study in NiMnSnIn Heusler alloys

Cited by 3 publications

References 27 publications

Microstructure and Mechanical Properties of Annealed Quinary Ni-Mn-Sn-Fe-In Heusler Alloy

Microstructure and Mechanical Properties of Annealed Quinary Ni-Mn-Sn-Fe-In Heusler Alloy

The phase transitions and magnetocaloric effects in Ga-doped Heusler Ni50Mn36Sn14 alloys

Effects of interstitial C atoms on magnetostructural transformation and magnetocaloric effect in MnNi0.77Fe0.23GeCx compounds

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The phase transitions and magnetocaloric effects in Ga-doped Heusler Ni₅₀Mn₃₆Sn₁₄ alloys