Structural phase transitions in SrTiO3 nanoparticles

Han Zhang, Sizhan Liu, Megan E. Scofield, Stanislaus S. Wong, Xinguo Hong, Vitali B. Prakapenka, Eran Greenberg, Trevor A. Tyson

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Pressure dependent structural measurements on monodispersed nanoscale SrTiO3 samples with average diameters of 10 to ∼80 nm were conducted to enhance the understanding of the structural phase diagram of nanoscale SrTiO3. A robust pressure independent polar structure was found in the 10 nm sample for pressures up to 13 GPa, while a size dependent cubic to tetragonal transition occurs (at P = Pc) for larger particle sizes. The results suggest that the growth of ∼10 nm STO particles on substrates with significant lattice mismatch may maintain a polar state for a large range of strain values, possibly enabling device use.

Original languageEnglish (US)
Article number052904
JournalApplied Physics Letters
Volume111
Issue number5
DOIs
StatePublished - Jul 31 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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