MCF Summer Seminar

July 26, 2024

2:00 p.m. ET

124 Roberts Hall

In-situ High-Temperature X-ray Diffraction Studies on Gallium Oxide Polymorphs, presented by Jingyu Tang

In-situ X-ray diffraction (XRD) is a powerful tool for investigating the structural properties of materials in real-time under various conditions, such as temperature, atmosphere and pressure. Unlike conventional XRD, which typically examines samples in static conditions, in-situ XRD provides dynamic insights into the behavior of materials as they undergo phase transformations. In this talk, I will present the use of in-situ high-temperature XRD to study the thermal stability of three metastable gallium oxide (Ga2O3) polymorphs (α-, κ(ε)-, and γ-Ga2O3) under air, N 2 and vacuum conditions. The strong crystallographic orientation relationships before and after the phase transitions of these Ga2O3 polymorphs to the more thermodynamically stable β-Ga2O3 will also be discussed.

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