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- Title
Single Crystal Growth and Magnetic Properties of High Oxidation State Material Ba<sub>2</sub>CoO<sub>4</sub>.
- Authors
Ryu, Gihun; Guo, Hanjie; Zhao, Li; Fernández‐Díaz, Maria Teresa; Drees, Yvo; Li, Z. W.; Hu, Zhiwei; Komarek, Alexander C.
- Abstract
This study reports on the physical properties of Ba2CoO4 single crystals grown in a high pressure mirror furnace at oxygen pressures of 20 bar. Direction dependent magnetic susceptibility measurements on the single crystals below TN≈25 K reveal a spin direction which is parallel to the crystallographic a‐axis. Therefore, the spin structure of Ba2CoO4 has been re‐analyzed and a different magnetic structure with magnetic moments pointing mainly in a‐direction is proposed which reconciles neutron, µSR, and magnetic susceptibility measurements. This study reports on the high pressure floating zone growth of the Co4+ high oxidation state material Ba2CoO4. Due to the availability of sufficiently large single crystals the spin structure of this compound could be re‐analyzed by means of direction dependent magnetic susceptibility as well as powder neutron diffraction measurements, thus, revealing that the magnetic moments basically point in a‐direction.
- Subjects
CRYSTAL growth; BARIUM compounds; COBALT oxides; SINGLE crystals; MAGNETIC properties of metals; MAGNETIC susceptibility; CRYSTALLOGRAPHY; MAGNETIC structure
- Publication
Physica Status Solidi - Rapid Research Letters, 2019, Vol 13, Issue 2, pN.PAG
- ISSN
1862-6254
- Publication type
Article
- DOI
10.1002/pssr.201800537