Neutron scattering investigation of the magnetic order in single crystalline BaFe2As2

Details Neutron scattering investigation of the magnetic order in single crystalline BaFe2As2 Neutron scattering investigation of the magnetic order in single crystalline BaFe2As2

2009-01-07

arxiv.org/abs/0901.0738v1

New J. Phys. 11 (2009) 055001

Physics

Condensed Matter

Superconductivity

10 pages, 2 figures

Scientific paper

10.1088/1367-2630/11/5/055001

The magnetic structure of BaFe2As2 was completely determined from polycrystalline neutron diffraction measurements soon after the ThCr2Si2-type FeAs-based superconductors were discovered. Both the moment direction and the in-plane antiferromagnetic wavevector are along the longer a-axis of the orthorhombic unit cell. There is only one combined magnetostructural transition at about 140 K. However, a later single-crystal neutron diffraction work reported contradicting results. Here we show neutron diffraction results from a clean single crystal sample, grown by a self-flux method, that support the original polycrystalline work.

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