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In-situ Investigation of Surface Oxygen Vacancies in Perovskites

Published online by Cambridge University Press:  11 June 2019

Fabio Miletto Granozio
Affiliation:
CNR-INFM
Gabriella De Luca
Affiliation:
Università di Salerno
Roberto Di Capua
Affiliation:
Università Federico I
Nathascia Lampis
Affiliation:
Università Federico I
Paolo Perna
Affiliation:
Università di Cassino
Milan Radovic
Affiliation:
Università Federico II
Marco Salluzzo
Affiliation:
CNR-INFM
Umberto Scotti di Uccio
Affiliation:
Università di Cassino
Alessia Sambri
Affiliation:
Università Federico II
Ruggero Vaglio
Affiliation:
CNR-INFM Università Federico II
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Abstract

Format

This is a copy of the slides presented at the meeting but not formally written up for the volume.

Abstract

Oxygen nonstoichiometry plays a major role in the physics of complex oxides with perovskite structure, also because of its effect on carrier density. Such issue has been systematically investigated in the multichamber system recently set up in our labs, equipped with a RHEED/PLD chamber for thin film growth, and with two XPS/SPA-LEED, and STM/AFM chambers for sample characterization. Variable temperature electron diffraction and photoemission experiments, complemented by scanning probe analyses, were performed in our system in order to systematically address the influence of thermodynamic conditions on oxygen content. SrTiO3-x, in particular, was taken as a prototypical example of an oxygen deficient perovskite for most experiments. The configuration of oxygen vacancies in the terminating TiO2 layer appears to be influenced by the presence of surface steps.

Type
Slide Presentations
Copyright
Copyright © Materials Research Society 2006

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