Mn2FeSi: An antiferromagnetic inverse-Heusler alloy

Aryal, Anil; Bakkar, Said; Samassekou, Hassana; Pandey, Sudip; Dubenko, Igor; Stadler, Shane; Ali, Naushad; Mazumdar, Dipanjan

doi:10.1016/j.jallcom.2020.153770

Cited by 27 publications

(14 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FC and ZFC curves shown in Figure 8a detect l magnetization of alloys when cooled from room temperature to about 170 K. The m netic behavior is similar to that at room temperature and the magnetization curves in t temperature range (Figure 8b, 200 K) consist of a weak magnetization reversal at l magnetic fields and linear contribution at higher fields. Magnetic properties of prepared Mn 2 FeSi alloy powder are different from annealed ingots (773 K/48 h) and powders (1223 K/100 h) presented in the literature [21,28]. Both systems exhibit antiferromagnetic-paramagnetic transition at T N about 50 K. However, it can be seen from Ref.…”

Section: Magnetic and Mössbauer Resultsmentioning

confidence: 72%

“…Generally, it is not simple to distinguish the inverse-and full-Heusler structure in their diffractograms. Nevertheless, the theoretical simulations yield higher relative intensity of the (111) diffraction peak compared to (200) for the inverse-Heusler alloy of XA structure [21]. Based on this result, the pattern in Figure 6b confirms formation of the inverse-Heusler Mn2FeSi alloy.…”

Section: Morphology Phase and Chemical Compositionmentioning

confidence: 68%

“…Theoretical calculations performed on this system [19,23] determined a lattice constant of 0.560 nm, total magnetic moment of about 2 µ B /f.u. (ferrimagnetic order, half-metallicity) and relatively large and antiparallel Mn moments at sites A and B. Experimentally, this alloy has so far been prepared only in the form of ingots and thin films [21,24]. However, observed antiferromagnetic behavior at low temperatures contradicts theoretical calculations and refers to the need for further detailed research [25].…”

Section: Introductionmentioning

confidence: 97%

“…They are characterized by a formula X 2 YZ and own the XA phase in space group F43m (216) (Figure 1b) that differs from L2 1 in the occupation of B and C sites. Even in this case the papers with theoretical calculations prevail [19,20] and if the alloys are produced, then mainly by mentioned conventional technologies [21,22].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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: Magnetic and Mössbauer Resultsmentioning

confidence: 72%

Section: Morphology Phase and Chemical Compositionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

“…Similarly, various laboratories over the world try to prepare such Heusler compositions experimentally and to study their structural and physical properties [3]. Among them, the Heusler Mn2FeSi compound was also subjected to theoretical DFT-based calculations [4] and subsequently synthesized by several procedures either in a form of ingots or thin films [5,6]. However, the unified view concerning its physical properties in connection with microstructure and mainly magnetic ordering is still vague.…”

Section: Introductionmentioning

confidence: 99%

inverse-heusler mn2fesi alloy prepared by powder metallurgy route

Životský

Skotnicová

Čegan

et al. 2022

METAL 2022 Conference Proeedings

View full text Add to dashboard Cite

The Mn2FeSi inverse-Heusler alloy was prepared by solid-state reactions using ball milling for 168 h in nhexane. Two milling procedures varying in the ball-to-powder ratio, namely 4:1 and 10:1, were used to follow their influence on alloy formation and its physical properties. In both cases no Heusler structure was obtained directly and therefore the subsequent annealing at 1223 K for 1.5 h in pure Ar was applied. The energydispersive X-ray analysis resulted in the chemical composition about 49.0-49.9 at% Mn, 25.3-25.6 at% Fe, and 24.8-25.4 at% Si, in a good agreement with nominal one. X-ray diffraction of both powders confirmed inverse-Heusler XA structure of lattice parameters 0.5675 nm (4:1) and 0.5677 nm (10:1), only slightly higher as theoretically obtained 0.560 nm. The presence of minor oxidation phases was also observed in the particle structure of powders. Magnetic properties were analysed at low and room temperatures. Both alloys exhibit paramagnetic behaviour at room temperature confirmed by transmission Mössbauer spectroscopy measurements. Different magnetic behaviour of alloys is observed below 65 K.

show abstract