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Absence of itinerant ferromagnetism in a cobalt-based oxypnictide
- Source :
- Phys. Rev. Mater. 8, 094405 (2024)
- Publication Year :
- 2024
-
Abstract
- We report a layered transition-metal-ordered oxypnictide Sr$_{2}$CrCoAsO$_{3}$. The new material was synthesized by solid-state reactions under vacuum. It has an intergrowth structure with a perovskite-like Sr$_3$Cr$_2$O$_6$ unit and ThCr$_2$Si$_2$-type SrCo$_2$As$_2$ block stacking coherently along the crystallographic $c$ axis. The measurements of electrical resistivity, magnetic susceptibility, and specific heat indicate metallic conductivity from the CoAs layers and short-range antiferromagnetic ordering in the CrO$_{2}$ planes. No itinerant-electron ferromagnetism expected in CoAs layers is observed. This result, combined with the first-principles calculations and the previous reports of other CoAs-layer-based materials, suggests that the Co$-$Co bondlength plays a crucial role in the emergence of itinerant ferromagnetism.<br />Comment: 9 pages, 7 figures
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Mater. 8, 094405 (2024)
- Publication Type :
- Report
- Accession number :
- edsarx.2409.06337
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevMaterials.8.094405