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arXiv · 2008.08809

Canted Antiferromagnetism in the Quasi-1D Iron Chalcogenide BaFe$_{2}$Se$_{4}$

Xiaoyuan Liu·Keith M. Taddei·Sheng Li·Wenhao Liu·Nikhil Dhale·Rashad Kadado·Diana Berman·Clarina Dela Cruz·Bing Lv
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Abstract

We report the synthesis and physical properties studies of quais-1D iron chalcogenide $\rm BaFe_2Se_4$ which shares the $\rm FeSe_4$ tetrahedra building motif commonly seen in the iron chalcogenide superconductors. A high-quality polycrystalline sample was achieved by solid-state reaction method and characterized by X-ray diffraction, electrical resistivity, magnetic susceptibility and neutron diffraction measurements. $\rm BaFe_2Se_4$ is a narrow gap semiconductor that magnetically orders at $\sim$ 310 K. Both neutron powder diffraction results and isothermal M-H loops suggest a canted antiferromagnetic structure where Fe sublattice are antiferromagnetically ordered along the c-axis quasi-1D chain direction, resulting in a net ferromagnetic moment in the perpendicular direction along the a-axis with tilted angle of 18.7$^\circ$ towards the b-axis.

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Xiaoyuan Liu, Keith M. Taddei, Sheng Li, Wenhao Liu, Nikhil Dhale, Rashad Kadado, Diana Berman, Clarina Dela Cruz, Bing Lv. 2020-08-20. Canted Antiferromagnetism in the Quasi-1D Iron Chalcogenide BaFe$_{2}$Se$_{4}$. https://doi.org/10.1103/physrevb.102.180403

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