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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

In this study, using polarized neutron reflectometry, we measured the influence of elastic bending stress on the magnetization depth profile of a La 0.8Sr 0.2MnO 3 (LSMO) epitaxial film grown on a SrTiO 3 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 (La 1-xPr x)1-yCayMnO 3 (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:
Grant/Contract Number:
AC05-00OR22725; AC52-06NA25396
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)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (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)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
OSTI Identifier:
1424472
Alternate Identifier(s):
OSTI ID: 1418872