2009/01/07 by M. Kofu, M Kofu, Y Qiu +12
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1088/1367-2630/11/5/055001
published as New J. Phys. 11 (2009) 055001 · 10 pages, 2 figures
arxiv created 2009/01/07 · openalex publication_date 2009/05/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
The magnetic structure of BaFe 2 As 2 was determined from polycrystalline neutron diffraction measurements soon after the ThCr 2 Si 2 -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 ∼140 K. However, a later single-crystal neutron diffraction work reported contradicting results. Here, we show neutron diffraction results from a single-crystal sample, grown by a self-flux method, that support the original polycrystalline work.