Half-metallic Ni2MnSn Heusler alloy prepared by rapid quenching

Nazmunnahar, M.; Ryba, T.; Val, J. J. del; Ipatov, M.; González, J.; Hašková, V.; Szabó, P.; Samuely, P.; Kravčák, J.; Vargová, Zuzana; Varga, R.

doi:10.1016/j.jmmm.2015.03.066

Cited by 26 publications

(18 citation statements)

References 25 publications

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“…This extraordinary behaviour can be understood via distinct character of energy bands for spin up and spin down states. While spin up band overlaps the Fermi energy level (E f ) and demonstrates a metallic character, the spin down band shows a semiconductor-like gap at the E f [3,4]. Heusler alloys, which are well-known for their diverse and multifunctional magnetic behaviour in various fields of application, have recently attracted much attention as they are theoretically predicted to exhibit 100% spin polarization at E f [5 -7].…”

Section: Introductionmentioning

confidence: 99%

Monocrystalline Heusler Co2FeSi alloy glass-coated microwires: Fabrication and magneto-structural characterization

Galdun

Ryba²,

Prida

et al. 2018

Journal of Magnetism and Magnetic Materials

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Large scale production of single crystalline phase of Heusler Co 2 FeSi alloy microwire is reported. The long microwire (~ 1 km) with the metallic nucleus diameter of about 2 µm is characterized by well oriented monocrystalline structure (B2 phase, with the lattice parameter a = 5.615 Å). Moreover, the crystallographic direction [101] is parallel to the wire´s axis along the entire length. Additionally, the wire is characterized by exhibiting a high Curie temperature (Tc > 800 K) and well-defined magnetic anisotropy mainly governed by shape. Electrical resistivity measurement reveals the exponential suppression of the electron-magnon scattering which provides strong evidence on the half-metallic behaviour of this material in the low temperature range.

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Section: Introductionmentioning

confidence: 99%

Monocrystalline Heusler Co2FeSi alloy glass-coated microwires: Fabrication and magneto-structural characterization

Galdun

Ryba²,

Prida

et al. 2018

Journal of Magnetism and Magnetic Materials

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“…Thus, the Heusler alloys prepared by arc melting or grown as thin films are required to initiate the necessary structural ordering through performing long time and high temperature annealing treatments [3]. To avoid this disadvantageous step, alternative rapid quenching production of the Heusler alloys has been recently carried out [4].…”

Section: Introductionmentioning

confidence: 99%

“…In their case, the spin polarization is given by a strong asymmetry in the majority and minority density of state close to the Fermi level. A noteworthy example is Ni 2 MnSn, which was experimentally proved to exhibit up to 70% of spin polarization [4].…”

Section: Introductionmentioning

confidence: 99%

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Ni_2FeSi Heusler Glass Coated Microwires

et al. 2017

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We report on fabrication, structural and magnetic properties of novel Heusler-type glass coated Ni2FeSi microwires that were prepared by the Taylor-Ulitovsky method, having a metallic nucleus diameter about 3.9 µm and total sample diameter of 39 µm. This single step and low cost fabrication technique offers to prepare up to km of glass-coated microwires starting from few g of cheap elements for diverse applications. The X-ray diffraction data from the metallic nucleus indicates L21 crystalline structure (a = 5.563 Å), with a possible DO3 disorder. Magnetic measurements determined the Curie temperature well above the room temperature (770 K) together with uniform easy magnetization axis of the metallic core, which predisposes this material to a suitable candidate for spintronic applications.

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“…Therefore, the Heusler alloys prepared by arc melting or grown thin films need an additional long thermal treatment (weeks) at high temperatures [5][6][7]. This disadvantageous post production can be eliminated by using rapid quenching methods like melt spinning, which offers the benefit of easy preparation of large amount of the Heusler alloys with correct L2 1 crystalline structure [8] (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Influence of Mn Doping on Magnetic and Structural Properties of Co_2FeSi Heusler Alloy

et al. 2017

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We have studied the effect of Mn doping on structural and magnetic properties of Co2FeSi Heusler alloy. Co2FeSi, Co2Mn0.25Fe0.75Si and Co2Mn0.5Fe0.5Si alloys were prepared by melt spinning technique which offers fast and simple production of large amount of materials in a single production step. The rapid quenching method provides an opportunity to prepare Heusler alloys with highly ordered L21 structure confirmed by X-ray analysis in all the samples. Magnetic measurements revealed high Curie temperatures (> 1000 K) and well defined easy magnetization plane parallel with the ribbon plane. Those attributes predispose given samples for applications in spintronics.

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Half-metallic Ni2MnSn Heusler alloy prepared by rapid quenching

Cited by 26 publications

References 25 publications

Monocrystalline Heusler Co2FeSi alloy glass-coated microwires: Fabrication and magneto-structural characterization

Monocrystalline Heusler Co2FeSi alloy glass-coated microwires: Fabrication and magneto-structural characterization

Ni_2FeSi Heusler Glass Coated Microwires

Influence of Mn Doping on Magnetic and Structural Properties of Co_2FeSi Heusler Alloy

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