Three-dimensional imaging of vortex structure in a ferroelectric nanoparticle driven by an electric field
- New Mexico State Univ., Las Cruces, NM (United States). Dept. of Physics; National Research Tomsk Polytechnic Univ., Tomsk (Russia). Dept. of General Physics, Physical-Technical Inst.
- Harbin Inst. of Technology (China). Condensed Matter Science and Technology Inst., School of Science; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Karlsruhe Inst. of Technology (KIT) Garmisch-Partenkirchen (Germany). Inst. for Photon Science and Synchrotron Radiation
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Xi'an Jiaotong Univ., Xian (China). State Key Lab. for Mechanical Behavior of Materials
- New Mexico State Univ., Las Cruces, NM (United States). Dept. of Physics; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Topological defects of spontaneous polarization are extensively studied as templates for unique physical phenomena and in the design of reconfigurable electronic devices. Experimental investigations of the complex topologies of polarization have been limited to surface phenomena, which has restricted the probing of the dynamic volumetric domain morphology in operando. Here, we utilize Bragg coherent diffractive imaging of a single BaTiO3 nanoparticle in a composite polymer/ferroelectric capacitor to study the behavior of a three-dimensional vortex formed due to competing interactions involving ferroelectric domains. Our investigation of the structural phase transitions under the influence of an external electric field shows a mobile vortex core exhibiting a reversible hysteretic transformation path. We also study the toroidal moment of the vortex under the action of the field. Our results open avenues for the study of the structure and evolution of polar vortices and other topological structures in operando in functional materials under cross field configurations.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); US Air Force Office of Scientific Research (AFOSR); USDOE Laboratory Directed Research and Development (LDRD) Program
- Grant/Contract Number:
- AC02-06CH11357; FA9550-14-1-0363; 257827
- OSTI ID:
- 1624043
- Journal Information:
- Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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