Structural phase transitions in SrTiO3 nanoparticles

Authors

Han Zhang, New Jersey Institute of Technology
Sizhan Liu, New Jersey Institute of Technology
Megan E. Scofield, Stony Brook University
Stanislaus S. Wong, Stony Brook University
Xinguo Hong, Stony Brook University
Vitali B. Prakapenka, Center for Advanced Radiation Sources
Eran Greenberg, Center for Advanced Radiation Sources
Trevor A. Tyson, New Jersey Institute of Technology

Document Type

Article

Publication Date

7-31-2017

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.

Identifier

85027359916 (Scopus)

Publication Title

Applied Physics Letters

External Full Text Location

https://doi.org/10.1063/1.4997332

ISSN

00036951

Issue

5

Volume

111

Grant

DE-FG02-94ER14466

Fund Ref

U.S. Department of Energy

Recommended Citation

Zhang, Han; Liu, Sizhan; Scofield, Megan E.; Wong, Stanislaus S.; Hong, Xinguo; Prakapenka, Vitali B.; Greenberg, Eran; and Tyson, Trevor A., "Structural phase transitions in SrTiO3 nanoparticles" (2017). Faculty Publications. 9409.
https://digitalcommons.njit.edu/fac_pubs/9409