Effect of Fe substitution by Co on off-stoichiometric Ni–Fe–Co–Mn–Sn Heusler alloy ribbons

Mishra, Shashank Shekhar; Mukhopadhyay, Suparno; Yadav, Thakur Prasad; Yadav, Ram Manohar; Radhakrishnan, Shankar; Vajtai, Róbert; Ajayan, Pulickel M.; Mukhopadhyay, N. K.; Singh, H. K.; Srivastava, O. N.

doi:10.1088/2053-1591/aa81a2

Cited by 7 publications

(3 citation statements)

References 52 publications

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“…However, the impacts of the melt‐spinning parameters have only been covered in a relatively small number of investigations for the multicomponent HEAs 30 . In contrast to as‐cast materials, RSP using melt spinning produces homogeneous, textured polycrystalline ribbons 31,32 . Therefore, it is anticipated that the quick solidification of multicomponent HEAs by the melt‐spinning technique can result in better qualities than those achieved by conventional casting.…”

Section: Introductionmentioning

confidence: 99%

“…30 In contrast to as-cast materials, RSP using melt spinning produces homogeneous, textured polycrystalline ribbons. 31,32 Therefore, it is anticipated that the quick solidification of multicomponent HEAs by the meltspinning technique can result in better qualities than those achieved by conventional casting. The benefits of a solidified melt-spun ribbon over arc melting are to enhance the hydrogen absorption capacity and better hydrogen absorption-desorption cyclic stability.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen storage properties in rapidly solidified TiZrVCrNi high‐entropy alloys

Kumar,

Yadav,

Shaz

et al. 2023

Energy Storage

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The development of alloys with substantial hydrogen storage capacities is a potential solution to the demand for hydrogen storage in a future hydrogen‐based energy system. The synthesis, structural‐microstructural properties, and hydrogen storage performance of a multicomponent TiZrVCrNi high‐entropy melt‐spun ribbon have been discussed in the present investigation. The x‐ray diffraction and transmission electron microscopy investigations confirm that this as‐cast and melt‐spun alloy contains only a single C14‐type hexagonal (a = b = 5.02 Å, c = 8.15 Å, α = β = 90°, γ = 120°) Laves phase. The room temperature pressure composition isotherms were studied with a pressure range of 0 to 40 atm. Continuing from our previous study in which we reported a hydrogen storage capacity of ~1.5 wt% in an as‐cast high‐entropy alloy synthesized using Arc melting, the total hydrogen storage capacity of TiZrVCrNi high‐entropy melt‐spun ribbons was found to be ~2 wt% in this work. This study makes the way forward for greater hydrogen storage in melt‐spun ribbons. The observation of only minimal losses in storage capacity, even after 10 cycles of experiments on hydrogen absorption, shows that the reversible hydrogen storage capacity has high durability. To the best of our knowledge, these demonstrations are the first to present a study on the hydrogen storage capacity (~2 wt%) of the equiatomic TiZrVCrNi melt‐spun ribbons.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrogen storage properties in rapidly solidified TiZrVCrNi high‐entropy alloys

Kumar,

Yadav,

Shaz

et al. 2023

Energy Storage

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“…The more d-electrons doping effects has been seen in Ti 2 CoAl by Chen et al [22], it was shown how V/Nb doping is more energetically favourable on different site of Ti. Effect of Fe substitution by Co on off-stoichiometric Ni-Fe-Co-Mn-Sn Heusler alloy ribbons has been seen and it was predicted that Fe substitution by Co creates change in the magnetic behavior [23].…”

Section: Introductionmentioning

confidence: 99%

Inducing half metallicity with alloying in Heusler Compound CoFeMnSb

Kumar

Reddy²,

Bhattacharjee³

et al. 2019

J. Phys.: Condens. Matter

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First principles studies were performed in order to find out the possibility of inducing half-metallicity in Heusler Compound CoFeMnSb, by means of alloying it with 3d-transition metal elements. Proper alloying element is selected through the calculations of formation energies. These calculations were tested with different concentrations of alloying elements at different atomic sites. Among the selected transition metal elements Sc and Ti are proposed to be excellent alloying elements particularly at Mn site. By using these alloying elements complete half metallic behaviour is obtained in CoFeMn 0.25 Sc 0.75 Sb, CoFeMn 0.75 Ti 0.25 Sb, CoFeMn 0.625 Ti 0.375 Sb, CoFeMn 0.50 Ti 0.50 Sb, CoFeMn 0.25 Ti 0.75 Sb and CoFeTiSb alloys. Shifting of Co-Fe d-states towards lower energy region leads to zero density of states at Fermi level for the spin minority channel. Alloying effects on the electronic structure and magnetization are discussed in details. Thermodynamical stability of these new alloys are major part of this study. The Curie temperatures of CoFeMn 0.25 Sc 0.75 Sb and CoFeMn 0.75 Ti 0.25 Sb were found to be 324.5 K and 682 K; respectively, showing good candidature for spintronics applications. For understanding the bonding nature of constituent atom of CoFeMnSb, crystal orbital Hamiltonian populations have been analysed.

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