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Title: Nanoscale ferroelastic twins formed in strained LaCoO 3 films

Abstract

The coexistence and coupling of ferroelasticity and magnetic ordering in a single material offers a great opportunity to realize novel devices with multiple tuning knobs. Complex oxides are a particularly promising class of materials to find multiferroic interactions due to their rich phase diagrams, and are sensitive to external perturbations. Still, there are very few examples of these systems. Here, we report the observation of twin domains in ferroelastic LaCoO 3epitaxial films and their geometric control of structural symmetry intimately linked to the material’s electronic and magnetic states. A unidirectional structural modulation is achieved by selective choice of substrates having twofold rotational symmetry. This modulation perturbs the crystal field–splitting energy, leading to unexpected in-plane anisotropy of orbital configuration and magnetization. These findings demonstrate the use of structural modulation to control multiferroic interactions and may enable a great potential for stimulation of exotic phenomena through artificial domain engineering.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [4]; ORCiD logo [5]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [6]; ORCiD logo [2]; ORCiD logo [7]; ORCiD logo [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics and Inst. of Physics; Univ. of Chinese Academy of Sciences, Beijing (China). Center of Materials Science and Optoelectronics Engineering
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  4. Arizona State Univ., Tempe, AZ (United States). Eyring Materials Center
  5. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Martin-Luther-Univ. Halle-Wittenberg, Halle (Saale) (Germany). Inst. for Physics
  7. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
Publication Date:
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)
OSTI Identifier:
1511915
Grant/Contract Number:  
AC05-00OR22725; AC02-06CH1135
Resource Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 5; Journal Issue: 3; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Guo, Erjia, Desautels, Ryan D., Keavney, David J., Roldan, Manuel, Kirby, Brian J., Lee, Dongkyu, Liao, Zhaoliang, Charlton, Timothy R., Herklotz, Andreas, Ward, T. Zac, Fitzsimmons, Michael R., and Lee, Ho Nyung. Nanoscale ferroelastic twins formed in strained LaCoO3 films. United States: N. p., 2019. Web. doi:10.1126/sciadv.aav5050.
Guo, Erjia, Desautels, Ryan D., Keavney, David J., Roldan, Manuel, Kirby, Brian J., Lee, Dongkyu, Liao, Zhaoliang, Charlton, Timothy R., Herklotz, Andreas, Ward, T. Zac, Fitzsimmons, Michael R., & Lee, Ho Nyung. Nanoscale ferroelastic twins formed in strained LaCoO3 films. United States. doi:10.1126/sciadv.aav5050.
Guo, Erjia, Desautels, Ryan D., Keavney, David J., Roldan, Manuel, Kirby, Brian J., Lee, Dongkyu, Liao, Zhaoliang, Charlton, Timothy R., Herklotz, Andreas, Ward, T. Zac, Fitzsimmons, Michael R., and Lee, Ho Nyung. Fri . "Nanoscale ferroelastic twins formed in strained LaCoO3 films". United States. doi:10.1126/sciadv.aav5050. https://www.osti.gov/servlets/purl/1511915.
@article{osti_1511915,
title = {Nanoscale ferroelastic twins formed in strained LaCoO3 films},
author = {Guo, Erjia and Desautels, Ryan D. and Keavney, David J. and Roldan, Manuel and Kirby, Brian J. and Lee, Dongkyu and Liao, Zhaoliang and Charlton, Timothy R. and Herklotz, Andreas and Ward, T. Zac and Fitzsimmons, Michael R. and Lee, Ho Nyung},
abstractNote = {The coexistence and coupling of ferroelasticity and magnetic ordering in a single material offers a great opportunity to realize novel devices with multiple tuning knobs. Complex oxides are a particularly promising class of materials to find multiferroic interactions due to their rich phase diagrams, and are sensitive to external perturbations. Still, there are very few examples of these systems. Here, we report the observation of twin domains in ferroelastic LaCoO3epitaxial films and their geometric control of structural symmetry intimately linked to the material’s electronic and magnetic states. A unidirectional structural modulation is achieved by selective choice of substrates having twofold rotational symmetry. This modulation perturbs the crystal field–splitting energy, leading to unexpected in-plane anisotropy of orbital configuration and magnetization. These findings demonstrate the use of structural modulation to control multiferroic interactions and may enable a great potential for stimulation of exotic phenomena through artificial domain engineering.},
doi = {10.1126/sciadv.aav5050},
journal = {Science Advances},
number = 3,
volume = 5,
place = {United States},
year = {2019},
month = {3}
}

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Works referenced in this record:

Domain Control in Multiferroic BiFeO3 through Substrate Vicinality
journal, September 2007

  • Chu, Y.-H.; Cruz, M.?P.; Yang, C.-H.
  • Advanced Materials, Vol. 19, Issue 18, p. 2662-2666
  • DOI: 10.1002/adma.200602972