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Title: Upper limit for the effect of elastic bending stress on the saturation magnetization of L a 0.8 S r 0.2 Mn O 3

Abstract

In this study, using polarized neutron reflectometry, we measured the influence of elastic bending stress on the magnetization depth profile of a La0.8Sr0.2MnO3 (LSMO) epitaxial film grown on a SrTiO3 substrate. The elastic bending strain of ±0.03% has no obvious effect on the magnetization depth profile at saturation. This result is in stark contrast to that of (La1-xPrx)1-yCayMnO3 (LPCMO) films for which strain of ±0.01% produced dramatic changes in the magnetization profile and Curie temperature. We attribute the difference between the influence of strain on the saturation magnetization in LSMO (weak or none) and LPCMO (strong) to a difference in the ability of LSMO (weak or none) and LPCMO (strong) to phase separate. Our observation provides an upper limit of tuning LSMO saturation magnetization via elastic strain effect.

Authors:
 [1];  [2]; ORCiD logo [3];  [4];  [5]; ORCiD logo [6]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; West Virginia Univ., Morgantown, WV (United States). Department of Physics and Astronomy
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division
  4. King Abdullah University of Science and Technology (KAUST) (Saudi Arabia). King Abdullah University of Science and Technology (KAUST); Arizona State Univ., Tempe, AZ (United States). John M. Cowley Center for High Resolution Electron Microscopy
  5. Univ. at Buffalo, NY (United States). Department of Materials Design and Innovation; Konkuk University, Seoul (Korea). Division of Quantum Phases & Devices, Department of Physics
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division ; Univ. of Tennessee, Knoxville, TN (United States). Department of Physics and Astronomy
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1424472
Alternate Identifier(s):
OSTI ID: 1418872; OSTI ID: 1471371
Report Number(s):
LA-UR-18-28583
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1801920
Grant/Contract Number:  
AC05-00OR22725; AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 1; 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; 36 MATERIALS SCIENCE; Material Science

Citation Formats

Wang, Qiang, Chen, A. P., Guo, Erjia J., Roldan, Manuel A., Jia, Q. X., and Fitzsimmons, Michael R. Upper limit for the effect of elastic bending stress on the saturation magnetization of La0.8Sr0.2MnO3. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.97.014437.
Wang, Qiang, Chen, A. P., Guo, Erjia J., Roldan, Manuel A., Jia, Q. X., & Fitzsimmons, Michael R. Upper limit for the effect of elastic bending stress on the saturation magnetization of La0.8Sr0.2MnO3. United States. doi:10.1103/PhysRevB.97.014437.
Wang, Qiang, Chen, A. P., Guo, Erjia J., Roldan, Manuel A., Jia, Q. X., and Fitzsimmons, Michael R. Wed . "Upper limit for the effect of elastic bending stress on the saturation magnetization of La0.8Sr0.2MnO3". United States. doi:10.1103/PhysRevB.97.014437. https://www.osti.gov/servlets/purl/1424472.
@article{osti_1424472,
title = {Upper limit for the effect of elastic bending stress on the saturation magnetization of La0.8Sr0.2MnO3},
author = {Wang, Qiang and Chen, A. P. and Guo, Erjia J. and Roldan, Manuel A. and Jia, Q. X. and Fitzsimmons, Michael R.},
abstractNote = {In this study, using polarized neutron reflectometry, we measured the influence of elastic bending stress on the magnetization depth profile of a La0.8Sr0.2MnO3 (LSMO) epitaxial film grown on a SrTiO3 substrate. The elastic bending strain of ±0.03% has no obvious effect on the magnetization depth profile at saturation. This result is in stark contrast to that of (La1-xPrx)1-yCayMnO3 (LPCMO) films for which strain of ±0.01% produced dramatic changes in the magnetization profile and Curie temperature. We attribute the difference between the influence of strain on the saturation magnetization in LSMO (weak or none) and LPCMO (strong) to a difference in the ability of LSMO (weak or none) and LPCMO (strong) to phase separate. Our observation provides an upper limit of tuning LSMO saturation magnetization via elastic strain effect.},
doi = {10.1103/PhysRevB.97.014437},
journal = {Physical Review B},
number = 1,
volume = 97,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

FIG. 1 FIG. 1: (a) X-ray diffraction θ/2θ scan for LSMO/STO film. Inset: θ/2θ scan around STO (002) and LSMO (002) peaks. (b) Reciprocal space map around STO (103) and LSMO (103) reflections. (c) X-ray reflectivity curve normalized to RF and the corresponding fit for LSMO/STO film. Inset: X-ray scattering length densitymore » depth profile obtained from the best fit. (d) STEM Z-contrast image of a thinner (34 nm) LSMO/STO film sample taken down the (110) zone axis. Inset: A low-magnification image. (e) Normalized, integrated EELS profiles measured along the growth direction obtained from the TiL2,3, O K, MnL2,3, La M4,5, and Sr L2,3 absorption edges. Data acquired in a Nion UltraSTEM200, operated at 200 kV, equipped with a fifth-order aberration corrector and a Gatan Enfinium spectrometer.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.