Search for crystallographic signatures of spin-crossover transition in the layered Ruddlesden–Popper-type cobalt oxychlorides Sr2CoO3Cl and

Name: Search for crystallographic signatures of spin-crossover transition in the layered Ruddlesden–Popper-type cobalt oxychlorides Sr2CoO3Cl and
Creator: Max Planck Institute CPFS, Topological Quantum Chemistry, Nöthnitzer Str. 40, 01187 Dresden, Germany; CPfS, Topological Quantum Chemistry, Nöthnitzer Str. 40, 01187 Dresden, 01187 Dresden, Germany; MPI-CPfS, Solid State Chemistry, Noethnitzer Strasse 40, 01187 Dresden, Germany
Published: 2028-01-01 00:00:00
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https://doi.esrf.fr/10.15151/ESRF-ES-2233038911

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We propose to study the pressure effect on structure of the layered Ruddlesden–Popper-type cobalt oxychlorides Sr2CoO3Cl and Sr3Co2O5Cl2. These compounds are antiferromagnets with high Neel temperature TN>300 K. Co(3+) ions in these compounds are square-pyramidally coordinated and thus possess pure high-spin state. Application of high pressure might lead to spin-crossover transition to low-spin state changing the magnetic and electronic properties of material. Co(3+) cation takes the low-spin state being octahedrally coordinated. Thus, the structural evolution under pressure can provide a hint for spin-crossover transition. Combined with electronic transport measurements, Co Kβ X-ray emission spectroscopy and electronic structure calculations obtained results will allow to unravel the interplay between crystal structure and magnetic and electronic properties of Co-based perovskite-like materials.

提供机构：

Max Planck Institute CPFS, Topological Quantum Chemistry, Nöthnitzer Str. 40, 01187 Dresden, Germany; CPfS, Topological Quantum Chemistry, Nöthnitzer Str. 40, 01187 Dresden, 01187 Dresden, Germany; MPI-CPfS, Solid State Chemistry, Noethnitzer Strasse 40, 01187 Dresden, Germany

创建时间：

2028-01-01