New Heusler compounds in Ni-Mn-In and Ni-Mn-Sn alloys

Li, X.-Z.; Zhang, W.-Y.; Valloppilly, Shah R.; Sellmyer, David J.

doi:10.1038/s41598-019-44179-2

Cited by 15 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the conventional techniques including arc and induction melting [10,11] producing the bulk materials, or dc-and rf-sputtering on different types of substrates in a form of thin films [12], there are still efforts for searching Heusler alloys with improved properties leading to involvement of non-traditional preparation technologies. Therefore, in last few years, there is couple of papers showing interesting properties of Heusler alloys prepared either by mechanical alloying (MA) in a form of powders [13,14] or by planar flow casting (PFC) technique having ribbon shapes [15,16]. The various ways of synthesis lead to structural imperfections on the atomic scale (antisite atoms, vacancies, etc.…”

Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Properties of Inverse-Heusler Mn2FeSi Alloy Powder Prepared by Ball Milling

et al. 2022

View full text Add to dashboard Cite

Ternary Mn2FeSi alloy was synthesized from pure elemental powders by mechanical alloying, using a high-energy planetary ball mill. The formation of an inverse-Heusler phase after 168 h of milling and subsequent annealing at 1173 K for 1.5 h was confirmed by X-ray diffraction. The diffractogram analysis yielded XA structure and the lattice parameter 0.5677 nm in a good agreement with the theoretically obtained value of 0.560 nm. The final powder was formed by particles of irregular shape and median diameter D50 of 3.8 μm and their agglomerates. The chemical analysis resulted in the mean composition of 49.0 at.% Mn, 25.6 at.% Fe and 25.4 at.% Si. At room temperature, the prepared samples featured a heterogeneous magnetic structure consisting of dominant paramagnetic phase confirmed by Mössbauer spectrometry and a weak ferro-/ferrimagnetic contribution detected by magnetization curves. From the field-cooled and zero-field-cooled curves the Néel temperature of 67 K was determined.

show abstract

Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Properties of Inverse-Heusler Mn2FeSi Alloy Powder Prepared by Ball Milling

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Note that the equiatomic NiMnIn is a metastable compound, which often produces a minority secondary phase during the rapid quenching process. 24 The composition, crystal structure, and quantity of the secondary phase strongly depend on the quench rate. In the present Ni-Mn-In sample, the shoulder around 40.8 in the XRD pattern is the most intense diffraction peak of the minority phase and its peak position is in good agreement with that of the highest-intensity peak of the Mn 3 In-type phase.…”

mentioning

confidence: 99%

Comparative study of topological Hall effect and skyrmions in NiMnIn and NiMnGa

Zhang

Balamurugan

Ullah

et al. 2019

Applied Physics Letters

View full text Add to dashboard Cite

A nonequilibrium rapid-quenching method has been used to fabricate NiMnIn and NiMnGa alloys that are chemically and morphologically similar but crystallographically and physically very different. NiMnGa crystallizes in a Ni 2 In-type hexagonal structure, whereas NiMnIn is a cubic Heusler alloy. Both alloys yield a topological Hall effect contribution corresponding to bubble-type skyrmion spin structures, but it occurs in much lower magnetic fields in NiMnIn as compared to NiMnGa. The effect is unrelated to net Dzyaloshinskii-Moriya interactions, which are absent in both alloys due to their inversion-symmetric crystal structures. Based on magnetic-force microscopy, we explain the difference between the two alloys by magnetocrystalline anisotropy and uniaxial and cubic anisotropies yielding full-fledged and reduced topological Hall effects, respectively. Since NiMnIn involves small magnetic fields (0.02-0.3 kOe) at and above room temperature, it is of potential interest in spin electronics.

show abstract

“…The observed XRD patterns for MnPdIn and MnNiSn most closely match the simulated patterns for the FHs MnPd 2 In and MnNi 2 Sn, respectively. This is intuitive since the FHs are stable as determined by DFT calculations and have been reported[64,65],…”

mentioning

confidence: 53%

Machine Learned Synthesizability Predictions Aided by Density Functional Theory

Lee¹,

Sarker²,

Saal³

et al. 2022

Preprint

View full text Add to dashboard Cite

A grand challenge of materials science is the computational prediction of synthesis pathways for novel compounds. Data-driven and machine learning (ML) approaches have made significant progress in addressing a portion of this problem, namely, predicting whether a compound is synthesizable or not. However, some recent attempts to do so have not incorporated energetic or phase stability information. Here, we combine thermodynamic stability calculated using density functional theory (DFT) with composition-based features to train a ML model that predicts a material's synthesizability. We focus on compositions with ABC stoichiometry and predict synthesizability in the half-heusler (HH) structure. Our model is trained on experimentally reported ABC compositions, and achieves a cross-validated precision of 0.83 and recall of 0.85. Our model shows improvement in identifying compositions that do not form HH when compared to a similar HH synthesizability model from a previous study. Our model identifies 163 synthesizable candidates out of 4141 unreported ABC compositions. More notably, 38 stable compositions are predicted unsynthesizable while 103 unstable compositions are predicted synthesizable; these findings otherwise cannot be made using DFT stability alone. This study presents a new approach for accurately predicting synthesizability, and identifies newly synthesizable candidate HH compositions for further experimental exploration.

show abstract

New Heusler compounds in Ni-Mn-In and Ni-Mn-Sn alloys

Cited by 15 publications

References 14 publications

Structural and Magnetic Properties of Inverse-Heusler Mn2FeSi Alloy Powder Prepared by Ball Milling

Structural and Magnetic Properties of Inverse-Heusler Mn2FeSi Alloy Powder Prepared by Ball Milling

Comparative study of topological Hall effect and skyrmions in NiMnIn and NiMnGa

Machine Learned Synthesizability Predictions Aided by Density Functional Theory

Contact Info

Product

Resources

About