Local orthorhombic phase in zirconium oxide nanocrystals: insights from X-ray pair distribution function analysis
Year: 2025
Type: article
Abstract: Zirconium dioxide (ZrO2) and hafnium dioxide (HfO2) have emerged as promising alternatives to conventional ferroelectric materials. Understanding the crystal phases of these oxides under different conditions is crucial for optimizing their properties. While there are several theories for the (anti)ferroelectric properties, comprehensive analysis, particularly at the local structure level, is lacking. In this study, we investigate the local structure of ZrO2 nanocrystals using X-ray pair distribution function (PDF) analysis, revealing an unexpected local orthorhombic distortion irrespective of crystallite size. This finding suggests the potential existence of an intermediate orthorhombic phase during the microscopic switching pathway observed in previous studies. Additionally, we explore the influence of crystallite size and surface effects on the PDF. These results contribute to a deeper understanding of the structural dynamics in ZrO2 and offer insights for the design of next-generation ferroelectric materials.
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,110
Awards: G102163711, G107546177, G1276524294, G1286251239, G1313983767, G1664757510, G2287611682, G262962599, G3075337988, G426311843, G434337789, G498139845, G5387317844, REAL MATERIALS IN ACTION: DATA ANALYSIS DEVELOPMENTS FOR REAL MATERIALS DOING REAL THINGS, Unlocking complex ceramic nanocrystals using kinetic control and mechanistic insight, G6256534168, G6848031779, G6918803902, G7019788644, G7583137537, G7627904275, Topological Solitons in Antiferroics, G8821459002, G969889393, G993149817
OpenAlex ID: W4411116891