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

doi:10.1063/1.4997332

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

Physics

Research output: Contribution to journal › Article › peer-review

7 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 = P_c) 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 language	English (US)
Article number	052904
Journal	Applied Physics Letters
Volume	111
Issue number	5
DOIs	https://doi.org/10.1063/1.4997332
State	Published - Jul 31 2017

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4997332

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title = "Structural phase transitions in SrTiO3 nanoparticles",

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.",

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T1 - Structural phase transitions in SrTiO3 nanoparticles

AU - Zhang, Han

AU - Liu, Sizhan

AU - Scofield, Megan E.

AU - Wong, Stanislaus S.

AU - Hong, Xinguo

AU - Prakapenka, Vitali B.

AU - Greenberg, Eran

AU - Tyson, Trevor A.

PY - 2017/7/31

Y1 - 2017/7/31

N2 - 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.

AB - 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.

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Structural phase transitions in SrTiO₃ nanoparticles

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