Year: 2024
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide In this study, we report a tetragonal perovskite structure of SrIrO 3 ( P 4/ mmm, a = 3.9362(9) Å, c = 7.880(3) Å) synthesized at 6 GPa and 1400 °C, employing the ambient pressure monoclinic SrIrO 3 with distorted 6 H structure as a precursor. The crystal structure of tetragonal SrIrO 3 was evaluated on the basis of single-crystal and powder X-ray diffraction. A cubic indexing was observed, which was attributed to overlooked superlattice reflections. Weak fractional peaks in the H and K dimensions suggest possible structure modulation by oxygen defects. Magnetization study reveals weak paramagnetic behavior down to 2 K, indicative of the interplay between spin–orbit coupling, electron correlations, and the crystal electric field. Additionally, measurements of electrical resistivity display metallic behavior with an upturn at about 54 K, which is ascribed to weak electron localization and possible structural defects.
Source: ACS Applied Electronic Materials
Authors: Haozhe Wang, Alberto de la Torre, Joseph T. Race, Qiaochu Wang, Jacob P. C. Ruff, Patrick M. Woodward, Kemp W. Plumb, David Walker, Weiwei Xie
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
OpenAlex ID: W4402032580