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Title: Two-Dimensional Layered Oxide Structures Tailored by Self-Assembled Layer Stacking via Interfacial Strain

Two-dimensional (2D) nanostructures emerge as one of leading topics in fundamental materials science and could enable next generation nanoelectronic devices. Beyond graphene and molybdenum disulphide, layered complex oxides are another large group of promising 2D candidates because of their strong interplay of intrinsic charge, spin, orbital and lattice. As a fundamental basis of heteroepitaxial thin film growth, interfacial strain can be used to design materials exhibiting new phenomena beyond their conventional form. Here we report the strain-driven self-assembly of Bismuth-based supercells (SC) with a 2D layered structure, and elucidate the fundamental growth mechanism with combined experimental tools and first-principles calculations. The study revealed that the new layered structures were formed by the strain-enabled self-assembled atomic layer stacking, i.e., alternative growth of Bi 2O 2 layer and [Fe 0.5Mn 0.5]O 6 layer. The strain-driven approach is further demonstrated in other SC candidate systems with promising room-temperature multiferroic properties. This well-integrated theoretical and experimental study inspired by the Materials Genome Initiatives opens up a new avenue in searching and designing novel 2D layered complex oxides with enormous promises.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [1] ;  [4] ;  [5] ;  [6] ;  [7] ;  [7] ;  [8] ;  [9] ;  [10] ;  [10] ;  [11] ;  [12]
  1. Texas A&M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering
  2. Univ. of North Texas, Denton, TX (United States). Dept. of Materials Science and Engineering, and Dept. of Chemistry; Xi’an Jiaotong Univ., Shaanxi (China). International Research Center for Renewable Energy, State key Lab. of Multiphase Flow in Power Engineering
  3. Texas A&M Univ., College Station, TX (United States). Dept. of Electrical and Computer Engineering; Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies
  4. Univ. of North Texas, Denton, TX (United States). Dept. of Materials Science and Engineering, and Dept. of Chemistry
  5. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  6. Normandie Univ. (France). ENSICAEN, UNICAEN, CNRS, CRISMAT
  7. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics & Materials Science Dept.
  8. Univ. of Cambridge (United Kingdom). Dept. of Materials Science
  9. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies
  10. North Carolina State Univ., Raleigh, NC (United States). NSF Center for Advanced Materials and Smart Structures, Dept. of Materials Science and Engineering
  11. Texas A&M Univ., College Station, TX (United States). Dept. of Mechanical Engineering
  12. Texas A&M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering; Texas A&M Univ., College Station, TX (United States). Dept. of Electrical and Computer Engineering
Publication Date:
Report Number(s):
BNL-113257-2016-JA
Journal ID: ISSN 1944-8244; R&D Project: MA015MACA; KC0201010
Grant/Contract Number:
SC0012704
Type:
Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 8; Journal Issue: 26; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society
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; interface; layered oxides; multiferroic; self-assembly; strain engineering
OSTI Identifier:
1336226