Synthesis, crystal and magnetic structure of iron selenide BaFe2Se3 with possible superconductivity at Tc=11K

Abstract

We report on synthesis of single crystals of BaFe2Se3 and study of their crystal and magnetic structures by means of synchrotron single crystal X-ray and neutron powder diffraction. The crystal structure has orthorhombic symmetry and consists of double chains of FeSe4 edge connected tetrahedra intercalated by barium. Below 240 K long range block-spin checkerboard antiferromagnetic (AFM) order is developed. The magnetic structure is similar to one observed in A0.8Fe1.6Se2 (A=K, Rb or Cs) superconductors. The crystals exhibit a transition to the diamagnetic state with an onset transition temperature of Tc ~11 K. Though we observe FeSe as an impurity phase (<0.8% mass fraction) the diamagnetism unlikely can be attributed to the FeSe-superconductor which has Tc\approx8.5K.

12 pages, 6 figures, added erratum (page 12) for Figure 4b showing tau2 structure

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Cited by in corpus (23)

• The Unexpected Properties of Alkali Metal Iron Selenide Superconductors
• Pressure-induced Superconductivity in the Iron-based Ladder Material BaFe2S3
• Iron Displacements and Magnetoelastic Coupling in the Spin-Ladder Compound BaFe2Se3
• Block magnetism coupled with local distortion in the iron-based spin-ladder compound BaFe2Se3
• Anisotropy in BaFe2Se3 single crystals with double chains of FeSe tetrahedra
• BaFe${}_2$Se${}_3$: a high $T_{\mathrm{C}}$ magnetic multiferroic with large ferrielectric polarization
• Block magnetic excitations in the orbitally selective Mott insulator BaFe2Se3
• Magnetic States of the Two-Leg Ladder Alkali Metal Iron Selenides $A$Fe${}_2$Se${}_3$
• Spin Glass and Semiconducting Behavior in 1D BaFe2-δSe3 Crystals
• Sequential structural and antiferromagnetic transitions in BaFe${}_2$Se${}_3$ under pressure
• Pressure-driven phase transition from antiferromagnetic semiconductor to nonmagnetic metal in two-leg ladders $A$Fe${}_2$$X$${}_3$ ($A$=Ba or K, $X$=S or Se)
• Orbital order and fluctuations in the two-leg ladder materials BaFe${}_2{X}_3$ ($X$ = S and Se) and CsFe${}_2$Se${}_3$
• Ab initio downfolding study of the iron-based ladder superconductor BaFe${}_2$S${}_3$
• First-principles study of magnetic properties in Fe-ladder compound BaFe2S3
• Electronic and Magnetic Structure of Possible Iron Based Superconductor BaFe2Se3
• Coexistence of localized and itinerant electrons in BaFe2X3 (X = S and Se) revealed by photoemission spectroscopy
• Gradual Enhancement of Stripe-Type Antiferromagnetism in Spin Ladder Material BaFe${}_2$S${}_3$ Under Pressure
• Novel Insulating Magnetism in Vacancy-Ordered K2Fe4Se5
• Canted Antiferromagnetism in the Quasi-1D Iron Chalcogenide BaFe${}_2$Se${}_4$
• Direct Visualization of Irreducible Ferrielectricity in Crystals
• Non-superconducting electronic ground state in pressurized BaFe${}_2$S${}_3$ and BaFe${}_2$S${}_{2.5}$Se${}_{0.5}$
• Magnetic-order-driven metal-insulator transitions in the quasi-one-dimensional spin-ladder compounds BaFe${}_2$S${}_3$ and BaFe${}_2$Se${}_3$
• Pressure-induced superconductivity in iron-based spin-ladder compound BaFe2+δ(S1-Sex)3