Surface structures in doped perovskite ceramics

• Grant number: 14/50641-5
• Support Opportunities: Regular Research Grants
• Start date: June 01, 2015
• End date: May 31, 2017
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Agreement: University of Sydney
• Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
• Principal Investigator: Valmor Roberto Mastelaro
• Grantee: Valmor Roberto Mastelaro
• Principal researcher abroad: Dorian Hanaor
• Institution abroad: University of Sydney, Australia
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 13/12473-0 - Synthesis of SrTi1-xFexO3, Zn1-xCoxO and CuAlO2 thin film oxide compostions for application as gas sensors, AP.R

Abstract

The investigation of nanostructured transition-metal-perovskite materiais (TMPs) is attracting rapidly growing international attention owing to their unique dielectric properties and catalytic activity and consequent value in a variety of valuable applications including sensors, actuators, hydrogen production and environmental remediation. These materiais are of the general form AB03 where A is an alkaline cation or lanthanide and B is a +4 transition metal. Critically, the performance of TMPs is strongly coupled to parameters of surface-structure and dopant speciation. In this project we will gain new insights into the relationships between synthesis parameters of doped TMPs in powder and thin film form, multi-scale surface structures, dopant speciation and performance. These studies will draw on the unique strengths in surface characterisation at the School of Civil Engineering at University of Sydney (USyd) and the advanced fabrication expertise within the Crystal Growth and Ceramic Materiais group at the São Carlos Institute of Physics at USP. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

LAVINSEKY, ANDERSON B. S.; WELSCH, ANNA-MARIA; KENNEDY, BRENDAN J.; BERNARDI, MARIA I. B.; MASTELARO, VALMOR R.. Order-disorder phenomena and octahedral tilting in SrTi1-xSnxO3 perovskites - A structural and spectroscopic study. Journal of Solid State Chemistry, v. 269, p. 521-531, JAN 2019. (14/50641-5, 13/09573-3)