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

Anna Krztoń-Maziopa

Abstract

We report on the synthesis of single crystals of BaFe2Se3 and study 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 with barium. Below 240 K, long range spin-block checkerboard antiferromagnetic 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) it is not likely that the diamagnetism is attributable to the FeSe superconductor, which has Tc ≈ 8.5 K.
Author Anna Krztoń-Maziopa KChNTCS
Anna Krztoń-Maziopa,,
- Chair Of Inorganic Chemistry And Solid State Technology
Journal seriesJournal of Physics-Condensed Matter, ISSN 0953-8984
Issue year2011
Vol23
No40
Pages402201
Keywords in EnglishSuperconductivity
DOIDOI:10.1088/0953-8984/23/40/402201
URL http://iopscience.iop.org/0953-8984/23/40/402201/
Languageen angielski
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Score (nominal)30
Publication indicators WoS Impact Factor: 2011 = 2.546 (2) - 2011=2.18 (5)
Citation count*33 (2015-11-27)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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