Effects of Iron Contents on the Vortex State in Fe
                x
            Se0.5Te0.5

Hamad, R. M.; Kayed, Tarek S.; Kunwar, Shankar; Elsayed, Khaled A.; Abu-Ruz, E.; Ziq, Kh. A.

doi:10.1007/s10948-017-4391-z

Cited by 8 publications

(1 citation statement)

References 17 publications

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“…In previous studies, most constructed phase diagrams of Fe y Se x Te 1−x superconductor were based on the change of Se content while a thorough phase diagram of Fe content is still lacking [8][9][10][11]. This is mainly because that, in bulk materials, extra Fe is needed to stabilize the single-phase tetragonal FeSeTe, while Fe deficiency leads to phase separation [12][13][14][15]. For Fe y Se x Te 1−x bulk, it has been revealed that the excess Fe (y > 1) exists as interstitial Fe located between the (Se, Te) layers, resulting in the weak charge-carrier localization [16].…”

Section: Introductionmentioning

confidence: 99%

Reassembled phase diagram for Fe_ySe_xTe_1−x superconducting films grown by pulsed laser deposition

Zhang,

He,

Xiao

et al. 2023

Supercond. Sci. Technol.

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FeySexTe1−x targets with different Fe contents have been prepared by the solid state reaction method followed by the hot-pressed sintering, and corresponding single-phase FeySexTe1−x films with high quality have been deposited at different substrate temperatures by the pulsed laser deposition. The evolution of the structure, superconductivity and pinning mechanism of the FeySexTe1−x superconductors with the Fe content has been investigated in detail. It can be found that the excess Fe can form the residual Fe impurities scattered in the polycrystalline bulks when the Fe content in the nominal composition exceeds 1.36. More importantly, a reassembled phase diagram for FeySexTe1−x superconducting films based on the change of both Fe and Se contents is constructed for the first time. It can be clearly seen that both the Fe and Se contents can greatly affect the superconductivity of FeySexTe1−x films within a wide range of Fe content (0.67 ≤ y ≤ 1.48). The Fe vacancies caused by the Fe deficiency is beneficial to the improvement of both critical temperature and activation energy, while with the increase of the Fe content, the superconductivity degrades because of the introduction of the interstitial Fe and the planar defects. The optimal Fe content at constant Se content shifts to the higher value with the increase of Se content. Our results facilitate the rational regulation of the superconducting properties, as well as the study of the underlying superconducting mechanism of FeSeTe superconductors.

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Section: Introductionmentioning

confidence: 99%

Reassembled phase diagram for Fe_ySe_xTe_1−x superconducting films grown by pulsed laser deposition

Zhang,

He,

Xiao

et al. 2023

Supercond. Sci. Technol.

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Assessment of FexSe0.5Te0.5 alloy properties for ionizing radiation shielding applications: an experimental study

Hamad

Dwaikat

et al. 2022

Appl. Phys. A

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Improvements of high-field pinning properties of polycrystalline Fe(Se,Te) material by heat treatments

et al. 2018

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Effects of Iron Contents on the Vortex State in Fe x Se0.5Te0.5

Cited by 8 publications

References 17 publications

Reassembled phase diagram for Fe_ySe_xTe_1−x superconducting films grown by pulsed laser deposition

Reassembled phase diagram for Fe_ySe_xTe_1−x superconducting films grown by pulsed laser deposition

Assessment of FexSe0.5Te0.5 alloy properties for ionizing radiation shielding applications: an experimental study

Improvements of high-field pinning properties of polycrystalline Fe(Se,Te) material by heat treatments

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Effects of Iron Contents on the Vortex State in Fe x Se0.5Te0.5

Cited by 8 publications

References 17 publications

Reassembled phase diagram for Fe y Se x Te1−x superconducting films grown by pulsed laser deposition

Reassembled phase diagram for Fe y Se x Te1−x superconducting films grown by pulsed laser deposition

Assessment of FexSe0.5Te0.5 alloy properties for ionizing radiation shielding applications: an experimental study

Improvements of high-field pinning properties of polycrystalline Fe(Se,Te) material by heat treatments

Contact Info

Product

Resources

About

Reassembled phase diagram for Fe_ySe_xTe_1−x superconducting films grown by pulsed laser deposition

Reassembled phase diagram for Fe_ySe_xTe_1−x superconducting films grown by pulsed laser deposition