Coercivity enhancement and magnetic property evaluation of Bi doped Mn2Sb

Anand, K.; Christopher, Nithya; Kumar, Jagdish; Gupta, Anurag; Singh, Nidhi

doi:10.1016/j.jmmm.2018.12.040

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…x = 0.2 is near the Mn solubility limit and shows formation of Mn 2 Sb (P4/nmm, no. 129), a ferrimagnet found to order near 550 K, 31 and the formation of this impurity is also seen in single crystal growth. 32 Although this particular impurity phase is magnetic, its high ordering temperature as compared to x = 0.2 (discussed later) implies that it should have a negligible effect on the measurement of magnetocaloric performance of x = 0.2.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

From Waste-Heat Recovery to Refrigeration: Compositional Tuning of Magnetocaloric Mn_1+xSb

et al. 2020

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Magnetic refrigeration, as well as waste-heat recovery, can be accomplished through the magnetocaloric effect, where temperature changes the magnetic state of a material or vice versa. Promising magnetocaloric materials display large changes in magnetic entropy (∆S M) upon application of a moderate magnetic field, and often associated with magnetic materials possessing some degree of magnetostructural coupling. In such compounds, the magnetic transition is coupled to some structural transition at the ordering temperature, and indicators for these are readily calculated by the magnetic deformation proxy Σ M. MnSb, with a Curie temperature T C = 577 K is has a calculated magnetic deformation of Σ M = 5.9%, and is a promising candidate material for waste-heat recovery. The temperature-dependence of structural, magnetic, and magnetocaloric properties of Mn 1+x Sb, where x is a tunable amount of interstitial Mn, are studied here. Excess Mn is incorporated as an interstitial whose magnetic moment is anti-aligned with the stoichiometric Mn, and the excess Mn has the effect of lowering T C , such that the Curie temperature can be tuned from 577 K to nearly room temperature at 318 K for x = 0.2. For x = 0.0, 0.1, and 0.2, values of ∆S M under a maximum magnetic field H = 5 T are found to be 3.65 J K −1 kg −1 , 3.00 J K −1 kg −1 , and 2.83 J K −1 kg −1 , respectively. While the maximum ∆S M decreases with x, the high refrigerant capacity-a more holistic measure of performance-is retained in this highly tunable system.

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Section: ■ Results and Discussionmentioning

confidence: 95%

From Waste-Heat Recovery to Refrigeration: Compositional Tuning of Magnetocaloric Mn_1+xSb

et al. 2020

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“…8 Moreover, doping with low melting point semimetal of Bi introduces self-assembled grain boundary precipitates, which enhances the magnetoresistance (MR) and magnetic entropy, 9 and in bonus, enhances the magnetostrain effect. [9][10][11][12] Very recently, Nabi et al observed a giant composition-tunable topological Hall effect up to B250 K in Mn 2-x Zn x Sb single crystals, which is caused by topological magnetic spin texture, suggesting that Mn 2 Sb-based compounds are good candidate materials for studying topological magnetism. 13,14 These results demonstrate that Mn 2 Sb-based compounds are good platforms for the fundamental study of interplay among the spin, charge, and lattice degrees of freedom.…”

Section: Introductionmentioning

confidence: 99%

Magnetotransport and magnetic properties of Cr-modified Mn₂Sb epitaxial thin films

Chen

Tang

et al. 2023

Phys. Chem. Chem. Phys.

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“…It should be noted that bulk Mn Sb is ferrimagnetic with °C 66 . Recent experimental studies suggest that pristine Mn Sb crystals at room temperature should have 140–175 emu/cm , 100–150 Oe and 0.16–0.2 67 , 68 . Comparing to our results, one can see that even for the samples MS-LT and MS-LT*, with detectable traces of Mn Sb phase, the variation of FM parameters cannot be consistently related to the contribution of Mn Sb crystallites, suggesting that primary magnetic properties of studied films are related almost solely to the MnSb nanoinclusions.…”

Section: Resultsmentioning

confidence: 99%

Structural characterization and magnetic response of poly(p-xylylene)–MnSb and MnSb films deposited at cryogenic temperature

Oveshnikov

Zav’yalov

Trunkin

et al. 2021

Sci Rep

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In this study, we employed several experimental techniques to investigate structure and magnetic properties of poly(p-xylylene)–MnSb composites synthesized by low-temperature vapor deposition polymerization technique and MnSb films deposited at various temperatures. The presence of MnSb nanocrystallites in the studied films was verified by the results of X-ray diffraction, electron microscopy and Raman spectroscopy studies. The obtained data revealed the formation of Sb-rich sublayer with well-oriented Sb grains near the susbtrate, which seems to act as a buffer for the consequent poly(p-xylylene)–MnSb or MnSb layer growth. Increasing the polymer content results in qualitative change of surface morphology of studied films. At high polymer content the hybrid nanocomposite with MnSb nanoparticles embedded into poly(p-xylylene) matrix is formed. All investigated samples demonstrated detectable ferromagnetic response at room temperature, while the parameters of this response revealed a complex correlation with nominal composition, presented crystal phases and surface morphology of studied films. Estimated values of the Curie temperature of the samples are close to that of bulk MnSb.

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Coercivity enhancement and magnetic property evaluation of Bi doped Mn2Sb

Cited by 7 publications

References 20 publications

From Waste-Heat Recovery to Refrigeration: Compositional Tuning of Magnetocaloric Mn_1+xSb

From Waste-Heat Recovery to Refrigeration: Compositional Tuning of Magnetocaloric Mn_1+xSb

Magnetotransport and magnetic properties of Cr-modified Mn₂Sb epitaxial thin films

Structural characterization and magnetic response of poly(p-xylylene)–MnSb and MnSb films deposited at cryogenic temperature

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Coercivity enhancement and magnetic property evaluation of Bi doped Mn2Sb

Cited by 7 publications

References 20 publications

From Waste-Heat Recovery to Refrigeration: Compositional Tuning of Magnetocaloric Mn1+xSb

From Waste-Heat Recovery to Refrigeration: Compositional Tuning of Magnetocaloric Mn1+xSb

Magnetotransport and magnetic properties of Cr-modified Mn2Sb epitaxial thin films

Structural characterization and magnetic response of poly(p-xylylene)–MnSb and MnSb films deposited at cryogenic temperature

Contact Info

Product

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From Waste-Heat Recovery to Refrigeration: Compositional Tuning of Magnetocaloric Mn_1+xSb

From Waste-Heat Recovery to Refrigeration: Compositional Tuning of Magnetocaloric Mn_1+xSb

Magnetotransport and magnetic properties of Cr-modified Mn₂Sb epitaxial thin films