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Title: Structural phase transitions in SrTiO 3 nanoparticles

We present that pressure dependent structural measurements on monodispersed nanoscale SrTiO 3 samples with average diameters of 10 to ~80 nm were conducted to enhance the understanding of the structural phase diagram of nanoscale SrTiO 3. 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. In conclusion, 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.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ; ORCiD logo [5] ;  [1]
  1. New Jersey Inst. of Technology, Newark, NJ (United States). Department of Physics
  2. State University of New York at Stony Brook, Stony Brook, NY (United States). Department of Chemistry
  3. State University of New York at Stony Brook, Stony Brook, NY (United States). Department of Chemistry ; Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Division
  4. Stony Brook Univ., NY (United States). Mineral Physics Institute; Center for High Pressure Science and Technology Advanced Research, Beijing (China)
  5. Univ. of Chicago, IL (United States). Center for Advanced Radiation Sources
Publication Date:
Report Number(s):
BNL-114120-2017-JA
Journal ID: ISSN 0003-6951; R&D Project: PM037; KC0201030
Grant/Contract Number:
SC0012704; FG02-07ER46402; AC02-98CH10886; FG02-94ER14466
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 111; Journal Issue: 5; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1376161