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Title: Octahedral rotation patterns in strained EuFeO 3 and other Pbnm perovskite films: Implications for hybrid improper ferroelectricity

Abstract

Here, we report the relationship between epitaxial strain and the crystallographic orientation of the in-phase rotation axis and A -site displacements in Pbnm-type perovskite films. Synchrotron diffraction measurements of EuFeO 3 films under strain states ranging from 2% compressive to 0.9% tensile on cubic or rhombohedral substrates exhibit a combination of a - a + c - and a + a - c - rotational patterns. We compare the EuFeO 3 behavior with previously reported experimental and theoretical work on strained Pbnm-type films on nonorthorhombic substrates, as well as additional measurements from LaGaO 3 , LaFeO 3 , and Eu 0.7Sr 0.3 MnO 3 films on SrTiO 3 . Compiling the results from various material systems reveals a general strain dependence in which compressive strain strongly favors a - a + c - and a + a - c - rotation patterns and tensile strain weakly favors a - a - c + structures. In contrast, EuFeO 3 films grown on Pbnm-type GdScO 3 under 2.3% tensile strain take on a uniform a - a + c - rotation pattern imprinted from the substrate, despitemore » strain considerations that favor the a - a - c + pattern. Our results point to the use of substrate imprinting as a more robust route than strain for tuning the crystallographic orientations of the octahedral rotations and A -site displacements needed to realize rotation-induced hybrid improper ferroelectricity in oxide heterostructures.« less

Authors:
 [1];  [1];  [2];  [1];  [1];  [3];  [3];  [4];  [1]
  1. Drexel Univ., Philadelphia, PA (United States). Dept. of Materials Science and Engineering
  2. Drexel Univ., Philadelphia, PA (United States). Dept. of Materials Science and Engineering; Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  3. Univ. of Naples Federico II (Italy)
  4. Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF)
OSTI Identifier:
1394840
Alternate Identifier(s):
OSTI ID: 1260861
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 94; Journal Issue: 2; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Choquette, A. K., Smith, C. R., Sichel-Tissot, R. J., Moon, E. J., Scafetta, M. D., Di Gennaro, E., Miletto Granozio, F., Karapetrova, E., and May, S. J. Octahedral rotation patterns in strained EuFeO3 and other Pbnm perovskite films: Implications for hybrid improper ferroelectricity. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.94.024105.
Choquette, A. K., Smith, C. R., Sichel-Tissot, R. J., Moon, E. J., Scafetta, M. D., Di Gennaro, E., Miletto Granozio, F., Karapetrova, E., & May, S. J. Octahedral rotation patterns in strained EuFeO3 and other Pbnm perovskite films: Implications for hybrid improper ferroelectricity. United States. doi:10.1103/PhysRevB.94.024105.
Choquette, A. K., Smith, C. R., Sichel-Tissot, R. J., Moon, E. J., Scafetta, M. D., Di Gennaro, E., Miletto Granozio, F., Karapetrova, E., and May, S. J. Thu . "Octahedral rotation patterns in strained EuFeO3 and other Pbnm perovskite films: Implications for hybrid improper ferroelectricity". United States. doi:10.1103/PhysRevB.94.024105. https://www.osti.gov/servlets/purl/1394840.
@article{osti_1394840,
title = {Octahedral rotation patterns in strained EuFeO3 and other Pbnm perovskite films: Implications for hybrid improper ferroelectricity},
author = {Choquette, A. K. and Smith, C. R. and Sichel-Tissot, R. J. and Moon, E. J. and Scafetta, M. D. and Di Gennaro, E. and Miletto Granozio, F. and Karapetrova, E. and May, S. J.},
abstractNote = {Here, we report the relationship between epitaxial strain and the crystallographic orientation of the in-phase rotation axis and A -site displacements in Pbnm-type perovskite films. Synchrotron diffraction measurements of EuFeO 3 films under strain states ranging from 2% compressive to 0.9% tensile on cubic or rhombohedral substrates exhibit a combination of a - a + c - and a + a - c - rotational patterns. We compare the EuFeO3 behavior with previously reported experimental and theoretical work on strained Pbnm-type films on nonorthorhombic substrates, as well as additional measurements from LaGaO3 , LaFeO3 , and Eu0.7Sr0.3 MnO3 films on SrTiO3 . Compiling the results from various material systems reveals a general strain dependence in which compressive strain strongly favors a - a + c - and a + a - c - rotation patterns and tensile strain weakly favors a - a - c + structures. In contrast, EuFeO3 films grown on Pbnm-type GdScO3 under 2.3% tensile strain take on a uniform a - a + c - rotation pattern imprinted from the substrate, despite strain considerations that favor the a - a - c + pattern. Our results point to the use of substrate imprinting as a more robust route than strain for tuning the crystallographic orientations of the octahedral rotations and A -site displacements needed to realize rotation-induced hybrid improper ferroelectricity in oxide heterostructures.},
doi = {10.1103/PhysRevB.94.024105},
journal = {Physical Review B},
number = 2,
volume = 94,
place = {United States},
year = {Thu Jul 07 00:00:00 EDT 2016},
month = {Thu Jul 07 00:00:00 EDT 2016}
}

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