Revised magnetic phase diagram for FexMn5−xSi3 intermetallics

Candini, Andrea; Može, O.; Kockelmann, W.; Cadogan, J. M.; Brück, E.; Tegus, O.

doi:10.1063/1.1688219

Cited by 20 publications

(19 citation statements)

References 12 publications

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“…The samples exhibit transitions to an ordered state at about 300 K, 200 K, 100 K and 100 K, for x = 4, 3, 2 and 1, respectively. This observation is in agreement with literature values [18,19]. The absence of a ferromagnetic transition at about 300 K of x = 1, 2 and 3 compounds indicates that no ferromagnetic impurities with x = 4 are present.…”

Section: Magnetometrysupporting

confidence: 82%

Elasticity and magnetocaloric effect inMnFe4Si3

et al. 2016

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The room temperature magnetocaloric material MnFe 4 Si 3 was investigated with nuclear inelastic scattering (NIS) and resonant ultrasound spectroscopy (RUS) at different temperatures and applied magnetic fields in order to assess the influence of the magnetic transition and the magnetocaloric effect on lattice dynamics. The NIS data give access to phonons with energies above 3 meV, whereas RUS probes the elasticity of the material in the MHz frequency range and thus low-energy, ∼ neV, phonon modes. A significant influence of the magnetic transition on the lattice dynamics is observed only in the low-energy, long-wavelength limit. MnFe 4 Si 3 and other compounds in the Mn 5-x Fe x Si 3 series were also investigated with vibrating sample magnetometry, resistivity measurements and Mössbauer spectroscopy in order to study the magnetic transitions and to complement the results obtained on the lattice dynamics.

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Section: Magnetometrysupporting

confidence: 82%

Elasticity and magnetocaloric effect inMnFe4Si3

et al. 2016

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“…: +31 205255714; fax: +31 205255788. ties and the possibilities of large MCEs in transition metal based compounds. Experiments have shown that the Mn 5 Si 3 structure type lends itself to easy substitution of other elements on the Mn site as well as on the Si site [10,11]. The intermetallic compound Mn 5 Ge 3 is of particular interest because it is ferromagnetic, has a Curie temperature close to room temperature (T c = 304 K [12]), and has a saturation magnetization of 2.60 µ B /Mn atom at 4.2 K [11].…”

Section: Introductionmentioning

confidence: 99%

Magnetic-entropy change in Mn5Ge3−xSix alloys

Zhao

Dagula

Tegus

et al. 2006

Journal of Alloys and Compounds

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“…In this regard, MnFe 4 Si 3 , which belongs to the Mn 5−x Fe x Si 3 ( = x 0 to 5) family, is a potential candidate because of its near room temperature paramagnetic (PM)-ferromagnetic (FM) transition accompanied with a large change in magnetization. The series Mn 5−x Fe x Si 3 ( = x 0 to 5) exhibits multiple magnetic phase transitions over a wide temperature range and MCE is observed across these transitions [19][20][21][22][23] . In this series, one end compound Mn 5 Si 3 undergoes two successive magneto-structural transitions: one from paramagnetic (PM) to collinear antiferromagnetic (AF2) state at ∼ T 100 N2 K coupled with a hexagonal to orthorhombic distortion followed by a AF2 to non-collinear antiferromagnetic (AF1) state at a lower temperature ∼ T 65 N1 K coupled with an orthorhombic to monoclinic structural change.…”

mentioning

confidence: 99%

“…x 3 5), the transition at T N1 collapses and the AFM transition at T N2 is transformed to a FM one 21,23 . On the other hand, the compound at the other end of this series i.e.…”

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confidence: 99%

Critical behavior and magnetocaloric effect across the magnetic transition in Mn1+xFe4−xSi3

Singh

Bag

Rawat

et al. 2020

Sci Rep

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The nature of the magnetic transition, critical scaling of magnetization, and magnetocaloric effect in Mn 1+x fe 4−x Si 3 (x = 0 to 1) are studied in detail. Our measurements show no thermal hysteresis across the magnetic transition for the parent compound which is in contrast with the previous report and corroborate the second order nature of the transition. The magnetic transition could be tuned continuously from 328 K to 212 K with Mn substitution at the Fe site. The Mn substitution leads to a linear increase in the unit cell volume and a slight reduction in the effective moment. A detailed critical analysis of the magnetization data for x = 0.0 and 0.2 is performed in the critical regime using the modified Arrott plots, Kouvel-Fisher plot, universal curve scaling, and scaling analysis of magnetocaloric effect. The magnetization isotherms follow modified Arrott plots with critical exponent (β  0.308, γ  1.448, and δ  5.64) for the parent compound (x = 0.0) and (β  0.304, γ  1.445, and δ  5.64) for x = 0.2. The Kouvel-Fisher and universal scaling plots of the magnetization isotherms further confirm the reliability of our critical analysis and values of the exponents. These values of the critical exponents are found to be same for both the parent and doped samples which do not fall under any of the standard universality classes. The exchange interaction decays as J(r) ~ r −3.41 following the renormalization group theory and the observed critical exponents correspond to lattice dimensionality d = 2, spin dimensionality n = 1, and the range of interaction σ = 1.41. This value of σ(<2) indicates long-range interaction between magnetic spins. A reasonable magnetocaloric effect ΔS m  −6.67 J/Kg-K and −5.84 J/Kg-K for x = 0.0 and 0.2 compounds, respectively, with a huge relative cooling power (RCP ~ 700 J/Kg) for 9 T magnetic field change is observed. The universal scaling of magnetocaloric effect further mimics the second order character of the magnetic transition. The obtained critical exponents from the critical analysis of magnetocaloric effect agree with the values deduced from the magnetic isotherm analysis.

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Revised magnetic phase diagram for FexMn5−xSi3 intermetallics

Cited by 20 publications

References 12 publications

Elasticity and magnetocaloric effect inMnFe4Si3

Elasticity and magnetocaloric effect inMnFe4Si3

Magnetic-entropy change in Mn5Ge3−xSix alloys

Critical behavior and magnetocaloric effect across the magnetic transition in Mn1+xFe4−xSi3

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