Frequency dependent polarisation switching in h-ErMnO3
- Univ. of Augsburg (Germany). Experimental Physics V. Center for Electronic Correlation and Magnetism
- Swiss Federal Inst. of Technology in Zurich (ETH Zurich) (Switzerland). Dept. of Materials
- Swiss Federal Inst. of Technology in Zurich (ETH Zurich) (Switzerland). Dept. of Materials; Univ. Grenoble Alpes (France). Inst. Néel
- Swiss Federal Inst. of Technology in Zurich (ETH Zurich) (Switzerland). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
- Norwegian Univ. of Science and Technology, Trondheim (Norway). Dept. of Materials Science and Engineering
We report an electric-field poling study of the geometrically-driven improper ferroelectric h-ErMnO3. From a detailed dielectric analysis, we deduce the temperature and the frequency dependent range for which single-crystalline h-ErMnO3 exhibits purely intrinsic dielectric behaviour, i.e., free from the extrinsic so-called Maxwell-Wagner polarisations that arise, for example, from surface barrier layers. In this regime, ferroelectric hysteresis loops as a function of frequency, temperature, and applied electric fields are measured, revealing the theoretically predicted saturation polarisation on the order of 5–6 μC/cm2. Special emphasis is put on frequency dependent polarisation switching, which is explained in terms of domain-wall movement similar to proper ferroelectrics. Controlling the domain walls via electric fields brings us an important step closer to their utilization in domain-wall-based electronics.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- European Commission (EC); European Research Council (ERC); Federal Ministry of Education and Research (BMBF) (Germany); German Research Foundation (DFG); Swiss National Science Foundation (SNSF) (Switzerland); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1461985
- Alternate ID(s):
- OSTI ID: 1435863
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 18 Vol. 112; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:1892109