Magnetocaloric Effect in Ni50Mn36Sb14–xZ x (Z = Al, Ge; x = 0, 2) Heusler Alloys

Emelyanova, S. M.; Bebenin, N. G.; Dyakina, V. P.; Chistyakov, V. V.; D’yachkova, T. V.; Tyutyunnik, A. P.; Wang, R. L.; Yang, Changping; Sauerzopf, F. M.; Марченков, В. В.

doi:10.1134/s0031918x18020047

Cited by 10 publications

(4 citation statements)

References 27 publications

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“…If the study of magnetic properties reveals high values of the MCE in these alloys, as was found in [3][4][5]8], this alloy may be promising for use as a cooling agent.…”

Section: Resultsmentioning

confidence: 64%

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Electrical resistance of Ni-=SUB=-42+x-=/SUB=-Mn-=SUB=-47-x-=/SUB=-Sn-=SUB=-11-=/SUB=- alloys

Волкова

Chistyakov

Патраков

et al. 2022

Physics of the Solid State

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The electrical resistance and structure of Ni42+xMn47-xSn11 alloys have been studied; where x=0, 1, 2, 3, 4, At room temperature, Ni42+xMn47-xSn11 alloys are ordered in the cubic L21 Ni2MnSn structure characteristic of Heusler alloys. The phase transition between the cubic austenite phase and martensite with lower symmetry, characteristic of ferromagnetic non-stoichiometric Heusler alloys, is observed at temperatures below room temperature. It was found that the partial replacement of Mn atoms by Ni atoms leads to an increase in the phase transition temperatures and to their shift to room temperature. Keywords: Heusler alloys, electrical resistance, phase transition.

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“…If the study of magnetic properties reveals high values of the MCE in these alloys, as was found in [3][4][5]8], this alloy may be promising for use as a cooling agent.…”

Section: Resultsmentioning

confidence: 64%

“…2. For all samples at temperatures below room temperature, features are observed that probably indicate a structural phase transition of the first order, accompanied by hysteresis inherent in similar alloys of nonstoichiometric composition Ni-Mn-X (X = Ga, In, Sn, Sb) [3][4][5].…”

Section: Resultsmentioning

confidence: 93%

Electrical resistance of Ni-=SUB=-42+x-=/SUB=-Mn-=SUB=-47-x-=/SUB=-Sn-=SUB=-11-=/SUB=- alloys

Волкова

Chistyakov

Патраков

et al. 2022

Physics of the Solid State

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“…Thus it is well understood that the calculation of the MCE can certainly be completed using the magnetic curves at definite temperature intervals. [ 47,48 ] Here, Curie temperature is around 341 K for the present Co 2 CrAl alloy. This temperature is close to the room temperature.…”

Section: Magnetic Propertiesmentioning

confidence: 92%

“…Hence isothermal magnetic curves have been used to do MCE analysis. Magnetic entropy change has been calculated from these isothermal magnetization plots using Maxwell's relation [ 47,48 ]

{(\frac{\partial S}{\partial H})}_{T} = {(\frac{\partial M}{\partial T})}_{H}

Δ S false(T, Δ H false) = \int_{0}^{H} (\frac{\partial M false(T, H false)}{\partial T}) d H

…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Critical Behavior and Magnetocaloric Effect in Co₂CrAl Heusler Alloy

Guha

Datta

Panda

et al. 2022

Physica Status Solidi (b)

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The analysis of structural, electrical transport, critical magnetic behavior, and magnetocaloric properties of Co2CrAl Heusler alloys has been conducted here. Co2CrAl full Heusler alloy has been prepared by the conventional arc melting method in Ar atmosphere and post‐annealing in a vacuum‐sealed quartz tube. X‐ray diffraction (XRD) pattern reveals the crystallization of the alloy to the Fm3¯m space group with L21 crystal symmetry. The correspondence between the magnetic and electrical transport properties of the Co2CrAl alloy has been observed. This alloy exhibits paramagnetic to ferromagnetic transition (Curie temperature) just above room temperature at around 340 K. Metallic to semiconducting transition occurs near the magnetic Curie temperature. Critical magnetic behavior has been analyzed by employing the Arrott plot, Kouvel–Fisher methods, and critical isotherm analysis. These conclude that the exchange interaction in Co2CrAl alloy follows between mean‐field theory having spin–spin long‐range interaction and the 3D Heisenberg model. The magnetocaloric effect has been explored from the isothermal magnetization data by employing Maxwell's equations. The highest magnetic entropy change is found to be ≈0.99 J (kg K)−1 for a magnetic field change of 30 kOe. A large working temperature window of 57 K is the advantage of the present alloy.

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Room temperature magneto-caloric effect and electron transport properties study on Ni2.14Mn0.55Sb1.31 alloy

Guha

Datta

Panda

et al. 2020

Journal of Alloys and Compounds

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Magnetocaloric Effect in Ni50Mn36Sb14–xZ x (Z = Al, Ge; x = 0, 2) Heusler Alloys

Cited by 10 publications

References 27 publications

Electrical resistance of Ni-=SUB=-42+x-=/SUB=-Mn-=SUB=-47-x-=/SUB=-Sn-=SUB=-11-=/SUB=- alloys

Electrical resistance of Ni-=SUB=-42+x-=/SUB=-Mn-=SUB=-47-x-=/SUB=-Sn-=SUB=-11-=/SUB=- alloys

Critical Behavior and Magnetocaloric Effect in Co₂CrAl Heusler Alloy

Room temperature magneto-caloric effect and electron transport properties study on Ni2.14Mn0.55Sb1.31 alloy

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Magnetocaloric Effect in Ni50Mn36Sb14–xZ x (Z = Al, Ge; x = 0, 2) Heusler Alloys

Cited by 10 publications

References 27 publications

Electrical resistance of Ni-=SUB=-42+x-=/SUB=-Mn-=SUB=-47-x-=/SUB=-Sn-=SUB=-11-=/SUB=- alloys

Electrical resistance of Ni-=SUB=-42+x-=/SUB=-Mn-=SUB=-47-x-=/SUB=-Sn-=SUB=-11-=/SUB=- alloys

Critical Behavior and Magnetocaloric Effect in Co2CrAl Heusler Alloy

Room temperature magneto-caloric effect and electron transport properties study on Ni2.14Mn0.55Sb1.31 alloy

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Resources

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Critical Behavior and Magnetocaloric Effect in Co₂CrAl Heusler Alloy