Floating zone growth at high oxygen pressures in Ruddlesden-Popper bilayer nickelate Y$_{y}$Sr$_{3-y}$Ni$_{2-x}$Al$_{x}$O$_{7-δ}$
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866908597793849344 |
|---|---|
| author | Yilmaz, H. Sosa-Lizama, P. Knauft, M. Küster, K. Starke, U. Isobe, M. Clemens, O. van Aken, P. A. Suyolcu, Y. E. Puphal, P. |
| author_facet | Yilmaz, H. Sosa-Lizama, P. Knauft, M. Küster, K. Starke, U. Isobe, M. Clemens, O. van Aken, P. A. Suyolcu, Y. E. Puphal, P. |
| contents | With the discovery of superconductivity under pressure in the Ruddlesden-Popper (RP) bilayer La$_3$Ni$^{2.5+}_2$O$_7$ and trilayer La$_4$Ni$^{2.66+}_3$O$_{10}$, a new field of nickelate superconductors opened up. In this respect, Sr-Ni-O RP-type phases represent alternative systems that exist with partial cation substitution. We demonstrate that by Y-doping in Sr$_{3}$Ni$_{2-x}$Al$_{x}$O$_7$ (SNAO), as Y$_{y}$Sr$_{3-y}$Ni$_{2-x}$Al$_{x}$O$_7$ (YSNAO), the drawback of an insulating ground state is overcome, and a significant decrease in resistivity is achieved with crystals exhibiting semiconducting behavior. We employ optical floating zone (OFZ) growth at 10 bar oxygen partial pressure to explore the phase formation in a narrow region of Y-Sr-Ni-Al-O and investigate via DFT the general stability of the pure Sr-Ni-O scenario. Using extensive diffraction and spectroscopy, as well as transport and magnetization measurements, the structural, chemical, electrical, and magnetic properties of the as-grown and reduced compounds were investigated. The optimal growth of YSNAO allows for large high quality crystals suitable for neutron studies. In the Al-free growth, a known $n=1$ RP system with Sr$_{1.66}$Y$_{0.33}$NiO$_{4-δ}$, from which the first single crystals were obtained, was further confirmed, opening the door for future exploration of \textit{A}-site substituted RP-type phases without Ni-site disorder. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_07861 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Floating zone growth at high oxygen pressures in Ruddlesden-Popper bilayer nickelate Y$_{y}$Sr$_{3-y}$Ni$_{2-x}$Al$_{x}$O$_{7-δ}$ Yilmaz, H. Sosa-Lizama, P. Knauft, M. Küster, K. Starke, U. Isobe, M. Clemens, O. van Aken, P. A. Suyolcu, Y. E. Puphal, P. Superconductivity With the discovery of superconductivity under pressure in the Ruddlesden-Popper (RP) bilayer La$_3$Ni$^{2.5+}_2$O$_7$ and trilayer La$_4$Ni$^{2.66+}_3$O$_{10}$, a new field of nickelate superconductors opened up. In this respect, Sr-Ni-O RP-type phases represent alternative systems that exist with partial cation substitution. We demonstrate that by Y-doping in Sr$_{3}$Ni$_{2-x}$Al$_{x}$O$_7$ (SNAO), as Y$_{y}$Sr$_{3-y}$Ni$_{2-x}$Al$_{x}$O$_7$ (YSNAO), the drawback of an insulating ground state is overcome, and a significant decrease in resistivity is achieved with crystals exhibiting semiconducting behavior. We employ optical floating zone (OFZ) growth at 10 bar oxygen partial pressure to explore the phase formation in a narrow region of Y-Sr-Ni-Al-O and investigate via DFT the general stability of the pure Sr-Ni-O scenario. Using extensive diffraction and spectroscopy, as well as transport and magnetization measurements, the structural, chemical, electrical, and magnetic properties of the as-grown and reduced compounds were investigated. The optimal growth of YSNAO allows for large high quality crystals suitable for neutron studies. In the Al-free growth, a known $n=1$ RP system with Sr$_{1.66}$Y$_{0.33}$NiO$_{4-δ}$, from which the first single crystals were obtained, was further confirmed, opening the door for future exploration of \textit{A}-site substituted RP-type phases without Ni-site disorder. |
| title | Floating zone growth at high oxygen pressures in Ruddlesden-Popper bilayer nickelate Y$_{y}$Sr$_{3-y}$Ni$_{2-x}$Al$_{x}$O$_{7-δ}$ |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2503.07861 |