Tetragonal magnetic phase in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ from x-ray and neutron diffraction

Abstract

Combined neutron and x-ray diffraction experiments demonstrate the formation of a low-temperature minority tetragonal phase in Ba${}_{0.76}$K${}_{0.24}$Fe${}_2$As${}_2$ in addition to the majority magnetic, orthorhombic phase. A coincident enhancement in the magnetic ($\frac{1}{2}$ $\frac{1}{2}$ 1) peaks shows that this minority phase is of the same type that was observed in Ba${}_{1-x}$Na${}_x$Fe${}_2$As${}_2$ ($0.24\le x\le 0.28$), in which the magnetic moments reorient along the $c$-axis. This is evidence that the tetragonal magnetic phase is a universal feature of the hole-doped iron-based superconductors.

6 pages, 7 figures

References in corpus (10)

• Extreme Sensitivity of Superconductivity to Stoichiometry in FeSe (Fe1+dSe)
• Magnetism and its microscopic origin in iron-based high-temperature superconductors
• Superconductivity and Crystal Structures of (Ba1-xKx)Fe2As2 (x = 0 - 1)
• Phase Diagram of Ba1-xKxFe2As2
• Superconductivity-induced reentrance of orthorhombic distortion in Ba1-xKxFe2As2
• Magnetoelastic Coupling in the Phase Diagram of Ba1-xKxFe2As2
• Spin reorientation in Na-doped BaFe${}_2$As${}_2$ studied by neutron diffraction
• New Phase Induced by Pressure in the Iron-Arsenide Superconductor K-Ba122
• Coincident structural and magnetic order in BaFe${}_2$(As${}_{1-x}$)P${}_x$)${}_2$ revealed by high-resolution neutron diffraction
• Symmetry of re-entrant tetragonal phase in Ba1-xNaxFe2As2: Magnetic versus orbital ordering mechanism

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