TiSrantisite: An abundant point defect in SrTiO3

Antti Karjalainen, Vera Prozheeva, Ilja Makkonen, Christo Guguschev, Toni Markurt, Matthias Bickermann, Filip Tuomisto*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We present a systematic study of the positron lifetime as a function of measurement temperature in strontium titanate (SrTiO3) single crystals grown in different conditions and by different synthesis methods. We combine our experimental results with state-of-the-art theoretical calculations of positron annihilation parameters. We find that the essentially omnipresent 180-190 ps lifetime component is most likely the Ti Sr antisite defect, possibly coupled with one or more oxygen vacancies, supporting the importance of the Ti Sr antisite related defects in SrTiO3.

Original languageEnglish
Article number245702
Number of pages9
JournalJournal of Applied Physics
Volume127
Issue number24
DOIs
Publication statusPublished - 28 Jun 2020
MoE publication typeA1 Journal article-refereed

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