Magnetic properties of Mn3-xFexSn compounds with tuneable Curie temperature by Fe content for thermomagnetic motors

Felez, Marissol Rodrigues; Coelho, A. A.; Gama, S.

doi:10.1016/j.jmmm.2017.08.028

Cited by 25 publications

(10 citation statements)

References 38 publications

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“…2(b), Fe doping into Mn 3 Sn seems to create a more complex magnetic structure in addition to the prior magnetic frustration due to kagome lattice. When the field is applied perpendicular to the c-axis, instead of dropping in magnetization as noticed in Mn 3 Sn, we see an increase in magnetization like ferromagnetic transition with a T C of ≈ 240 K. This value of T c is in good agreement with the earlier reports on the similar Fe doping composition [52,53]. Importantly, we find a sharp drop in magnetization at around 125 K due to the spin-reorientation that is found at 260 K in the parent system.…”

Section: B Magnetic Propertiessupporting

confidence: 92%

“…Next, for the magnetic field applied parallel to c-axis, we do not see any significant spinreorientation transition-like feature but we do find a fer-romagnetic transition almost at the same temperature of 240 K similar to H⊥ c. Also, the spin-glass-like transition occurs almost at the same temperature of 40 K similar to H⊥ c. Overall, on comparing the magnetization M(T) data between Mn 3 Sn and Mn 2.8 Fe 0.2 Sn, we find that Fe doping enhances the magnetization in Mn 3 Sn, while it does not affect the low-temperature spin-glass transition temperature. Perhaps, higher Fe doping concentration may increase the spin-glass transition temperature [52].…”

Section: B Magnetic Propertiesmentioning

confidence: 99%

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Experimental Realization of Room Temperature Topological Hall Effect in Kagome Antiferromagnet

Low¹,

Ghosh²,

Thirupathaiah³

2021

Preprint

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Mn3Sn is a fascinating magnetic topological system, showing topological characteristics within the Kagome lattice network due to the non-vanishing Berry phase in the momentum space. In this study, for the first time, we show a large pure roomtemperature topological Hall effect (THE) in the xy-plane (0001), while the anomalous Hall effect (AHE) has been noticed in the zx-plane (01 10) of Mn3Sn. With Fe doping, we can induce a giant xy-plane THE in addition to AHE at low temperatures, while still preserving the pure room-temperature THE in Mn2.8Fe0.2Sn. Moreover, the AHE in the zx-plane has been increased with Fe doping. Our studies indicate that the topological properties are highly anisotropic in these systems. Most importantly, the large room-temperature pure THE observed in Mn3Sn is quite promising for the realization of room-temperature topotronic-based applications.

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Section: B Magnetic Propertiessupporting

confidence: 92%

Section: B Magnetic Propertiesmentioning

confidence: 99%

Experimental Realization of Room Temperature Topological Hall Effect in Kagome Antiferromagnet

Low¹,

Ghosh²,

Thirupathaiah³

2021

Preprint

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“…The coexistence of FM and AFM phases is also reported in such type of system in the literature. [42,43] Figure 1d shows the field-dependent magnetization curves at different temperatures carried out in a five-loop measurement protocol. Here, we showed only two cycles of magnetization from þ5 to À5T because no hysteresis is observed in the magnetization curves in contrast to the Mn 3 Ge compound where the hysteresis loop was observed.…”

Section: Structural and Magnetization Analysismentioning

confidence: 99%

Topological Hall Effect in (Mn_1−xFe_x)_3.25Ge (x = 0.4) Hexagonal Magnet

Kumar

Shukla

Shahi

et al. 2023

Physica Rapid Research Ltrs

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Topologically protected nontrivial spin structures attract significant interest in condensed matter physics for their utilization in low‐power‐consumption spintronics devices, memory devices, etc. The topological Hall effect (THE) is an additional Hall resistivity in the system arising from real‐space Berry curvature picked up by conduction electron passing through the nontrivial spin texture. Compared to expensive neutron diffraction measurements, THE is often used as a cost‐effective tool to investigate nontrivial spin texture in the materials. In the present manuscript, THE in the (Mn1−xFex)3.25Ge (x = 0.4) alloy is studied using magneto‐transport measurements. Maximum THE is found in the system about 0.65 μΩ cm at 150 K, which is in contrast to the pristine Mn3Ge that has zero THE. The strong temperature variation of THE suggests that the noncoplanar spin structure due to competition among the magneto‐crystalline anisotropy, antiferromagnetic coupling, and ferromagnetic exchange interaction is the main source of THE in the present system. Herein, it is shown that chemical doping can be an effective way to induce THE in the material with vanishing THE in its parent phase.

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“…Previous study has studied the exchange anisotropy of (Mn, Fe) 3 Sn and found that Mn 2.5 Fe 0.5 Sn has the triangular antiferromagnetic structure similar to Mn 3 Sn at room temperature [20]. Furthermore, it is found that there is a critical point at ∼Fe0.5 for x dependence of Curie temperature in Mn 3−x Fe x Sn [21]. However, there is no any report about its Hall effect.…”

Section: Introductionmentioning

confidence: 99%

Evolution of diverse Hall effects during the successive magnetic phase transitions in Mn_2.5Fe_0.6Sn_0.9 Kagome-lattice alloy

Liu

Zhang²,

Zhang³

et al. 2020

J. Phys.: Condens. Matter

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Evolution of diverse Hall effects due to successive magnetic transitions has been observed in Mn2.5Fe0.6Sn0.9 by suitable chemical substitution of Fe in Mn3.1Sn0.9. This noncollinear antiferromagnetic alloy exhibits a Neel temperature of 325 K. Upon cooling from 325 K, a magnetic phase transition from noncollinear antiferromagnetism to ferromagnetism occurs at 168 K due to the tilting of magnetization towards c axis. Above this temperature, anomalous Hall resistivity ranged from 0.6 to 1.3 μΩ cm has been observed in noncollinear antiferromagnetic state. Below this temperature, a topological Hall effect (THE) starts to appear due to the non-vanishing scalar spin chirality arising from the noncoplanar spin structure. Further decreasing temperature to 132 K, another magnetic transition happens, resulting in the coexistence of ferromagnetism and antiferromagnetism, so that a Hall plateau with large hysteresis below 70 K is yielded. A hysteresis as high as ∼80 kOe is obtained in ρ xy -H at 15 K. However, the Hall plateau disappears and only anomalous Hall effect (AHE) persists when further decreasing the temperature to 5 K. The present study provides a picture of diverse magneto-transport properties correlated to the variable spin structures driven by magnetic phase transitions.

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Magnetic properties of Mn3-xFexSn compounds with tuneable Curie temperature by Fe content for thermomagnetic motors

Cited by 25 publications

References 38 publications

Experimental Realization of Room Temperature Topological Hall Effect in Kagome Antiferromagnet

Experimental Realization of Room Temperature Topological Hall Effect in Kagome Antiferromagnet

Topological Hall Effect in (Mn_1−xFe_x)_3.25Ge (x = 0.4) Hexagonal Magnet

Evolution of diverse Hall effects during the successive magnetic phase transitions in Mn_2.5Fe_0.6Sn_0.9 Kagome-lattice alloy

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Magnetic properties of Mn3-xFexSn compounds with tuneable Curie temperature by Fe content for thermomagnetic motors

Cited by 25 publications

References 38 publications

Experimental Realization of Room Temperature Topological Hall Effect in Kagome Antiferromagnet

Experimental Realization of Room Temperature Topological Hall Effect in Kagome Antiferromagnet

Topological Hall Effect in (Mn1−xFex)3.25Ge (x = 0.4) Hexagonal Magnet

Evolution of diverse Hall effects during the successive magnetic phase transitions in Mn2.5Fe0.6Sn0.9 Kagome-lattice alloy

Contact Info

Product

Resources

About

Topological Hall Effect in (Mn_1−xFe_x)_3.25Ge (x = 0.4) Hexagonal Magnet

Evolution of diverse Hall effects during the successive magnetic phase transitions in Mn_2.5Fe_0.6Sn_0.9 Kagome-lattice alloy