Pressure Dependence of Magnetic Properties in 
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: Multistimulus Responsiveness of Caloric Effects by Modeling and Experiment

Karpenkov, D.; Karpenkov, A. Yu.; Skokov, Konstantin P.; Radulov, I.; Железный, М. В.; Faske, Tom; Gutfleisch, Oliver

doi:10.1103/physrevapplied.13.034014

Cited by 28 publications

(18 citation statements)

References 54 publications

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“…In this work, we evaluate the reversible entropy change of materials undergoing magnetoelastic transitions in the framework of the Bean-Rodbell model [26] using TEC as a figure of merit. This model makes it possible to reproduce SOPT and FOPT materials by modifying the η parameter, showing a good agreement with experimental results of MC materials [27][28][29][30]. In the present work, we show that the reversible TEC has a strong magnetic field dependence for FOPT, exhibiting a significant increase when the magnetic field is large enough to overcome the thermal hysteresis of the material observed at zero field.…”

Section: Introductionsupporting

confidence: 86%

“…In this work, fixed values for g, T 0 , n and k were used (2, 300 K, 3.0 × 10 28 m −3 and 2.5 × 10 −11 Pa −1 , respectively), while m (or J) and η were varied to study their influence. These fixed values are in the range of those for typical MC materials at room temperature (e.g., n = 3.1 × 10 28 m −3 and k = 2.6 × 10 −11 Pa −1 for Gd [32] and n = 1.6 × 10 28 m −3 and k = 0.9 × 10 −11 Pa −1 [29] for La(Fe,Si) 13 ).…”

Section: Methodsmentioning

confidence: 84%

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Reversibility of the Magnetocaloric Effect in the Bean-Rodbell Model

Moreno-Ramírez

Franco

2021

Magnetochemistry

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The applicability of magnetocaloric materials is limited by irreversibility. In this work, we evaluate the reversible magnetocaloric response associated with magnetoelastic transitions in the framework of the Bean-Rodbell model. This model allows the description of both second- and first-order magnetoelastic transitions by the modification of the parameter ( for second-order and for first-order ones). The response is quantified via the Temperature-averaged Entropy Change (), which has been shown to be an easy and effective figure of merit for magnetocaloric materials. A strong magnetic field dependence of is found for first-order transitions, having a significant increase when the magnetic field is large enough to overcome the thermal hysteresis of the material observed at zero field. This field value, as well as the magnetic field evolution of the transition temperature, strongly depend on the atomic magnetic moment of the material. For a moderate magnetic field change of 2 T, first-order transitions with have better than those corresponding to stronger first-order transitions and even second-order ones.

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Section: Introductionsupporting

confidence: 86%

Section: Methodsmentioning

confidence: 84%

Reversibility of the Magnetocaloric Effect in the Bean-Rodbell Model

Moreno-Ramírez

Franco

2021

Magnetochemistry

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“…The response to multiple stimuli requires a strong coupling of the ferroic order parameters. While a magnetoelectric coupling is rare and often not very pronounced, the opposite is the case for magnetoelastic materials such as La-Fe-Si [11], Fe-Rh [12], Gd-Si-Ge [13] and metamagnetic shapememory alloys, in particular Ni-Mn-based Heusler compounds [14][15][16]. Especially the martensitic transformation in the latter exhibits a high sensitivity to both, magnetic and mechanical (uniaxial load and hydrostatic pressure) fields.…”

Section: Introductionmentioning

confidence: 99%

Influence of microstructure on the application of Ni-Mn-In Heusler compounds for multicaloric cooling using magnetic field and uniaxial stress

et al. 2021

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“…Rev. Materials 4, 111401 (2020) DOI: https://doi.org/10.1103/PhysRevMaterials.4.111401 ensure cyclability [16]. For Ni-Mn-X-(Co) based Heusler compounds with X = In [13,17,18], Sb [19,20] or Sn [21][22][23], large inverse magnetocaloric and conventional elastocaloric effects based on their martensitic transformation have been reported.…”

Section: Introductionmentioning

confidence: 99%

Influence of the martensitic transformation kinetics on the magnetocaloric effect in Ni-Mn-In

Pfeuffer

Gottschall

Faske

et al. 2020

Phys. Rev. Materials

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The inverse magnetocaloric effect (MCE) in Ni-Mn-based Heusler compounds occurs during the magnetostructural transition between low-temperature, low-magnetization martensite and hightemperature, high-magnetization austenite. In this study, we analyze the metamagnetic transformation of a Ni 49.8 Mn 35 In 15.2 compound by simultaneous adiabatic temperature change ΔT ad and strain Δl/l 0 measurements in pulsed magnetic fields up to 10 T. We observe a ΔT ad of -10 K and a Δl/l 0 of -0.22 % when the reverse martensitic transition is fully induced at a starting temperature of 285 K. By a variation of the magnetic field-sweep rates between 316 Ts -1 , 865 Ts -1 and 1850 Ts -1 , the transitional dynamics of the reverse martensitic transformation have been investigated. Our experiments reveal an apparent delay upon the end of the reverse martensitic transformation at field rates exceeding 865 Ts -1 which is related to the annihilation of retained martensite. As a consequence, the field hysteresis increases and higher fields are required to saturate the transition. In contrast, no time-dependent effects on the onset of the reverse martensitic transformation were observed in the studied field-sweep range. Our results demonstrate that kinetic effects in Heusler compounds strongly affect the magnetic cooling cycle, especially when utilising a multicaloric "exploiting-hysteresis cycle" where high magnetic fieldsweep rates are employed.

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Pressure Dependence of Magnetic Properties in La(Fe,Si)13 : Multistimulus Responsiveness of Caloric Effects by Modeling and Experiment

Cited by 28 publications

References 54 publications

Reversibility of the Magnetocaloric Effect in the Bean-Rodbell Model

Reversibility of the Magnetocaloric Effect in the Bean-Rodbell Model

Influence of microstructure on the application of Ni-Mn-In Heusler compounds for multicaloric cooling using magnetic field and uniaxial stress

Influence of the martensitic transformation kinetics on the magnetocaloric effect in Ni-Mn-In

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