The metamagnetic behavior and giant inverse magnetocaloric effect in Ni–Co–Mn–(Ga, In, Sn) Heusler alloys

Entel, P.; Sokolovskiy, V. V.; Ogura, M.; Gruner, Markus E.; Grünebohm, Anna; Comtesse, Denis; Akai, H.

doi:10.1016/j.jmmm.2015.03.003

Cited by 23 publications

(5 citation statements)

References 33 publications

(53 reference statements)

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“…30% of the nearest neighbor interaction) in the tetragonal phase. In the case of cubic Ni 50 Mn 37.5 Al 12.5 (Figure (a)), the interaction between Mn and Ni is large and ferromagnetic‐like, a trend observed in most NiMn‐based Heusler alloys . The dominant antiferromagnetic interaction between host Mn and

{Mn}_{e x c e s s}

though makes the antiferromagnetic state stable in the austenite phase.…”

Section: Resultsmentioning

confidence: 92%

Impact of Co and Fe Doping on the Martensitic Transformation and the Magnetic Properties in Ni‐Mn‐Based Heusler Alloys

Dutta

Körmann

Hickel

et al. 2017

Physica Status Solidi (b)

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Doping with Co and Fe is a promising strategy to enhance the performance of Ni-Mn-based magnetocaloric materials. We investigate here the impact of these two elements on the magnetic properties and the martensitic transformations in Mn-rich Ni-Mn-Al Heusler alloy. Based on ab initio ground-state energies, we explain the martensitic transformation temperatures in these alloys. The magnetic ground states of the austenite and the martensite phases are discussed on the basis of magnetic exchange parameters. A thorough comparison of the transition temperatures and the change in saturation moments during martensitic transformation brings into light the relative potential of the two substitutional elements for future applications.

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{Mn}_{e x c e s s}

though makes the antiferromagnetic state stable in the austenite phase.…”

Section: Resultsmentioning

confidence: 92%

Impact of Co and Fe Doping on the Martensitic Transformation and the Magnetic Properties in Ni‐Mn‐Based Heusler Alloys

Dutta

Körmann

Hickel

et al. 2017

Physica Status Solidi (b)

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“…Chemical composition, for instance, is found to affect the MT hysteresis in a rather complex manner . This perhaps can be attributed to the changes in electron to atom ratio, the intensity of magnetic interactions between the different atomic species, and/or itinerant magnetic spins …”

Section: Introductionmentioning

confidence: 99%

First‐Principles Characterization of Equilibrium Vacancy Concentration in Metamagnetic Shape Memory Alloys: An Example of Ni₂MnGa

Wang

Salas

Medasani

et al. 2018

Physica Status Solidi (b)

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Despite the fact that there is evidence for the important role that vacancies play in the martensitic transformation (MT) behavior of metamagnetic shape memory alloys (MMSMAs), little theoreticaland even experimentalwork on the thermodynamics and kinetics of point defects in these systems has been carried out. Since the MT behavior of MMSMAs has a great influence on their magneto-caloric response, investigating the vacancy evolution in MMSMAs has potentially a significant technological impact. Scarcity of studies may be due to the limited characterization capability available for studying vacancy properties as well as their impacts on the materials performance. The current work seeks to introduce the application of the grand-canonical dilute-solution model to the investigation of equilibrium (thermal) populations of point defects in Ni 2 MnGa, used as a prototypical MMSMA. The thermodynamic model is coupled to first-principles calculations of the energetics of defect-containing supercell structures. Such characterization capability allows for more realistic investigations of MMSMAs with the vacancy degree of freedom taken into account and subsequently opens up many interesting research topics. Here we demonstrate the capability of the first principles based characterization method by investigating the role of vacancy concentration in the kinetics of order-disorder (ODO) process and the MT temperature of Ni 2 MnGa.

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“…Known materials made of abundant and non-toxic elements include those with body-centered cubic (bcc) A2, B2 [30], or Heusler structures [80,[92][93][94][95][96][97][98][99][100][101][102][103] (with or without a possible tetragonal distortion), Mn 0.5 Fe 0.5 NiSi 1−x Al x [31] with TiNiSi-type orthorhombic to Ni 2 In-type hexagonal phase transition, LaFe 13−x Si x [87,104,105] with the NaZn 13 -type 1:13 phase (Figure 3), a subset of magnetic shape memory alloys (SMA) containing Ni and Mn, manganites based on La 0.7 Ca 0.3 MnO 3 , etc.…”

Section: ∆S T T C (K) ∆T S (K)mentioning

confidence: 99%

“…Continued increase of diversity of considered structures is an important task of materials discovery. Known materials made of abundant and non-toxic elements include those with body-centered cubic (bcc) A2, B2 [30], or Heusler structures [80,[92][93][94][95][96][97][98][99][100][101][102][103] (with or without a possible tetragonal distortion), Mn0.5Fe0.5NiSi1-xAlx [31] with TiNiSi-type orthorhombic to Ni2In-type hexagonal phase transition, LaFe13-xSix [87,104,105] with the NaZn13-type 1:13 phase (Figure 3), a subset of magnetic shape memory alloys (SMA) containing Ni and Mn, manganites based on La0.7Ca0.3MnO3, etc. The MCE depends not only on composition and structure, but also on atomic ordering, which is controlled by thermal history of a sample.…”

Section: ∆S T T C (K) ∆T S (K)mentioning

confidence: 99%

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Viable Materials with a Giant Magnetocaloric Effect

Zarkevich

Zverev

2020

Crystals

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This review of the current state of magnetocalorics is focused on materials exhibiting a giant magnetocaloric response near room temperature. To be economically viable for industrial applications and mass production, materials should have desired useful properties at a reasonable cost and should be safe for humans and the environment during manufacturing, handling, operational use, and after disposal. The discovery of novel materials is followed by a gradual improvement of properties by compositional adjustment and thermal or mechanical treatment. Consequently, with time, good materials become inferior to the best. There are several known classes of inexpensive materials with a giant magnetocaloric effect, and the search continues.

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The metamagnetic behavior and giant inverse magnetocaloric effect in Ni–Co–Mn–(Ga, In, Sn) Heusler alloys

Cited by 23 publications

References 33 publications

Impact of Co and Fe Doping on the Martensitic Transformation and the Magnetic Properties in Ni‐Mn‐Based Heusler Alloys

Impact of Co and Fe Doping on the Martensitic Transformation and the Magnetic Properties in Ni‐Mn‐Based Heusler Alloys

First‐Principles Characterization of Equilibrium Vacancy Concentration in Metamagnetic Shape Memory Alloys: An Example of Ni₂MnGa

Viable Materials with a Giant Magnetocaloric Effect

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The metamagnetic behavior and giant inverse magnetocaloric effect in Ni–Co–Mn–(Ga, In, Sn) Heusler alloys

Cited by 23 publications

References 33 publications

Impact of Co and Fe Doping on the Martensitic Transformation and the Magnetic Properties in Ni‐Mn‐Based Heusler Alloys

Impact of Co and Fe Doping on the Martensitic Transformation and the Magnetic Properties in Ni‐Mn‐Based Heusler Alloys

First‐Principles Characterization of Equilibrium Vacancy Concentration in Metamagnetic Shape Memory Alloys: An Example of Ni2MnGa

Viable Materials with a Giant Magnetocaloric Effect

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First‐Principles Characterization of Equilibrium Vacancy Concentration in Metamagnetic Shape Memory Alloys: An Example of Ni₂MnGa