Amphoteric doping of praseodymium Pr 3+ in SrTiO 3 grain boundaries

H. Yang, H. S. Lee, P. G. Kotula, Yukio Sato, Y. Ikuhara, N. D. Browning

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Charge compensation in rare-earth Praseodymium (Pr 3+ ) doped SrTiO 3 plays an important role in determining the overall photoluminescence properties of the system. Here, the Pr 3+ doping behavior in SrTiO 3 grain boundaries (GBs) is analyzed using aberration corrected scanning transmission electron microscopy. The presence of Pr 3+ induces structural variations and changes the statistical prevalence of the GB structures. In contrast to the assumption that Pr 3+ substitutes on the Sr site in the bulk, Pr 3+ is found to substitute on both Sr and Ti sites inside the GBs, with the highest concentration at the Ti sites. This amphoteric doping behavior in the boundary plane is further confirmed by first principles theoretical calculations.

Original languageEnglish
Article number121904
JournalApplied Physics Letters
Volume106
Issue number12
DOIs
Publication statusPublished - Mar 23 2015

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praseodymium
grain boundaries
substitutes
aberration
rare earth elements
photoluminescence
transmission electron microscopy
scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Yang, H., Lee, H. S., Kotula, P. G., Sato, Y., Ikuhara, Y., & Browning, N. D. (2015). Amphoteric doping of praseodymium Pr 3+ in SrTiO 3 grain boundaries Applied Physics Letters, 106(12), [121904]. https://doi.org/10.1063/1.4916223

Amphoteric doping of praseodymium Pr 3+ in SrTiO 3 grain boundaries . / Yang, H.; Lee, H. S.; Kotula, P. G.; Sato, Yukio; Ikuhara, Y.; Browning, N. D.

In: Applied Physics Letters, Vol. 106, No. 12, 121904, 23.03.2015.

Research output: Contribution to journalArticle

Yang, H, Lee, HS, Kotula, PG, Sato, Y, Ikuhara, Y & Browning, ND 2015, ' Amphoteric doping of praseodymium Pr 3+ in SrTiO 3 grain boundaries ', Applied Physics Letters, vol. 106, no. 12, 121904. https://doi.org/10.1063/1.4916223
Yang, H. ; Lee, H. S. ; Kotula, P. G. ; Sato, Yukio ; Ikuhara, Y. ; Browning, N. D. / Amphoteric doping of praseodymium Pr 3+ in SrTiO 3 grain boundaries In: Applied Physics Letters. 2015 ; Vol. 106, No. 12.
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