Caloric effects induced by magnetic and mechanical fields in a Ni<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow /><mml:mrow><mml:mn>50</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>Mn<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow /><mml:mrow><mml:mn>25</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>Ga<mml:math xmlns:mml="http://www.w3.org/1998/Math

Castillo-Villa, Pedro O.; Soto-Parra, Daniel; Matutes-Aquino, J.A.; Ochoa‐Gamboa, R.A.; Planes, Antoni; Mañosa, Lluı́s; González-Alonso, David; Stipcich, Marcelo; Romero, Ricardo; Rı́os-Jara, D.; Flores‐Zúñiga, H.

doi:10.1103/physrevb.83.174109

Cited by 75 publications

(40 citation statements)

References 25 publications

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“…There is a strong coupling between magnetic and structural degrees of freedom in these alloys [14] and changes in strain and volume are accompanied by changes in magnetization. These changes make the martensitic transition in these materials to be sensitive to uniaxial stress, hydrostatic pressure, and magnetic field, and giant elastocaloric [15,16], barocaloric [8] and magnetocaloric [17,18] effects have already been reported for these alloys.…”

Section: Introductionmentioning

confidence: 98%

Tailoring barocaloric and magnetocaloric properties in low-hysteresis magnetic shape memory alloys

et al. 2015

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We report on the barocaloric and magnetocaloric effects in a series of low-hysteresis Ni-Mn-In magnetic shape memory alloys. We show that the behaviour exhibited by several quantities that characterise these caloric effects (isothermal entropy change, adiabatic temperature change and refrigerant capacity) can be rationalised in terms of the relative distance between the Curie point of the austenite and the martensitic transition temperature. It is found that the two caloric effects exhibit opposite trends. The behaviour of the barocaloric effect parallels that exhibited by the transition entropy change, thereby showing larger values for weakly magnetic samples. Regarding the magnetocaloric effect, the entropy change is maximum for those samples transforming martensitically close to the Curie point of the austenite. Such a maximum value does not correspond to the maximum adiabatic temperature change, and samples with martensitic transition slightly below the Curie point do have larger temperature changes as a result of the strongest sensitivity of the transition to the magnetic field.

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Section: Introductionmentioning

confidence: 98%

Tailoring barocaloric and magnetocaloric properties in low-hysteresis magnetic shape memory alloys

et al. 2015

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“…Besides the temperature, MT can also be induced by stress, which results in an eC effect due to the latent heat associated with the MT. 16 However, investigations on the eC effect in this system are sparse, probably due to the low materials' efficiency 17 and poor mechanical performance. 5,7 In this paper, we have prepared a textured Ni-Mn-Ga polycrystalline alloy by directional solidification and found that it exhibits a large eC effect.…”

Section: All Article Content Except Where Otherwise Noted Is Licensmentioning

confidence: 99%

Combined caloric effects in a multiferroic Ni–Mn–Ga alloy with broad refrigeration temperature region

Yang

et al. 2017

APL Materials

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Solid-state refrigeration based on the caloric effects is promising to replace the traditional vapor-compressing refrigeration technology due to environmental protection and high efficiency. However, the narrow working temperature region has hindered the application of these refrigeration technologies. In this paper, we propose a method of combined caloric, through which a broad refrigeration region can be realized in a multiferroic alloy, Ni–Mn–Ga, by combining its elastocaloric and magnetocaloric effects. Moreover, the materials’ efficiency of elastocaloric effect has been greatly improved in our sample. These results illuminate a promising way to use multiferroic alloys for refrigeration with a broad refrigeration temperature region.

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“…Magnetic superelasticity is involved in the stabilization of the phase with highest magnetization in an external magnetic field [5,6]. In addition to shape memory and superelasticity, these alloys (ternary magnetic shape memory Heusler alloys of type Ni-(Co)-Mn-(Cr)-(Al, Ga, In, Sn, Sb)) exhibit magnetocaloric (conventional and inverse) [7,8,9], barocaloric [10] and elastocaloric [11] effects, magnetoresistance [12], exchange bias [13] and kinetic arrest [14]. Also spin-glass [15] and strain-glass [16] features have been reported on several of these Heusler alloys.…”

Section: Introductionmentioning

confidence: 99%

Large magnetocaloric effects in magnetic intermetallics: First-principles and Monte Carlo studies

Entel

Gruner

Ogura

et al. 2015

MATEC Web of Conferences

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Abstract.We have performed ab initio electronic structure calculations and Monte Carlo simulations of frustrated ferroic materials where complex magnetic configurations and chemical disorder lead to rich phase diagrams. With lowering of temperature, we find a ferromagnetic phase which transforms to an antiferromagnetic phase at the magnetostructural (martensitic) phase transition and to a cluster spin glass at still lower temperatures. The Heusler alloys Ni-(Co)-Mn-(Cr)-(Ga, Al, In, Sn, Sb) are of particular interest because of their large inverse magnetocaloric effect associated with the magnetostructural transition and the influence of Co/Cr doping. Besides spin glass features, strain glass behavior has been observed in Ni-Co-Mn-In. The numerical simulations allow a complete characterization of the frustrated ferroic materials including the Fe-Rh-Pd alloys.

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Caloric effects induced by magnetic and mechanical fields in a Ni50Mn25−xGa
Pedro O. Castillo-Villa
¹
,
Daniel Soto-Parra
²
,
J.A. Matutes-Aquino
³

et al.

Cited by 75 publications

References 25 publications

Tailoring barocaloric and magnetocaloric properties in low-hysteresis magnetic shape memory alloys

Tailoring barocaloric and magnetocaloric properties in low-hysteresis magnetic shape memory alloys

Combined caloric effects in a multiferroic Ni–Mn–Ga alloy with broad refrigeration temperature region

Large magnetocaloric effects in magnetic intermetallics: First-principles and Monte Carlo studies

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Caloric effects induced by magnetic and mechanical fields in a Ni50Mn25−xGaPedro O. Castillo-Villa1, Daniel Soto-Parra2, J.A. Matutes-Aquino3 et al.

Cited by 75 publications

References 25 publications

Tailoring barocaloric and magnetocaloric properties in low-hysteresis magnetic shape memory alloys

Tailoring barocaloric and magnetocaloric properties in low-hysteresis magnetic shape memory alloys

Combined caloric effects in a multiferroic Ni–Mn–Ga alloy with broad refrigeration temperature region

Large magnetocaloric effects in magnetic intermetallics: First-principles and Monte Carlo studies

Contact Info

Product

Resources

About

Caloric effects induced by magnetic and mechanical fields in a Ni50Mn25−xGa
Pedro O. Castillo-Villa
¹
,
Daniel Soto-Parra
²
,
J.A. Matutes-Aquino
³

et al.