Thin Films of α-Quartz GeO₂ on TiO₂-Buffered Quartz Substrates.

ABSTRACT: α-Quartz (SiO₂) is one of the most widely used piezoelectric materials. However, the challenges associated with the control of the crystallization and the growth process limit its production to the hydrothermal growth of bulk crystals. GeO₂ can also crystallize into the α-quartz phase, with a higher piezoelectric response and better thermal stability than SiO₂. In a previous study, we have found that GeO₂ crystallization on nonquartz substrates shows a tendency to form spherulites with a randomized orientation; while epitaxial growth of crystalline GeO₂ thin films can take place on quartz (SiO₂) substrates. However, in the latter case, the α-β phase transition that takes place in both substrates and thin films during heating

SUBMITTER: Zhou S 

PROVIDER: S-EPMC10767700 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature