Topological domain-engineered antiferroelectric-like behavior with enhanced energy storage properties in ferroelectric hexagonal Cr-doped YMnO3 |
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| Affiliation: | 1. Faculty of Engineering and Natural Sciences, Department of Engineering Physics, Istanbul Medeniyet University, 34700, Uskudar, Istanbul, Turkey;2. CEITEC BUT, Brno University of Technology, Purkyňova 123, 612 00, Brno, Czech Republic;3. Bağlar Mah., Gunesli Konutlar, No: 38, D-24, 34212, Bagcilar, Istanbul, Turkey;4. Faculty of Science, Department of Physics, Eskisehir Technical University, 26470, Eskisehir, Turkey;5. Atatürk University, Faculty of Engineering, Department of Electrical and Electronics Engineering, TR-25240, Erzurum, Turkey;1. Zernike Institute for Advanced Materials, University of Groningen, 9747 AG Groningen, The Netherlands;2. Department of Engineering Physics, Faculty of Engineering, Ankara University, 06100 Besevler, Ankara, Turkey;3. Department of Physics, State University of Malang, Jl. Semarang No. 5, 65145 Malang, Indonesia;4. Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha 10, 40132 Bandung, Indonesia;5. ICREA – Institucio Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain;6. ICN2 – Institut Catala de Nanociencia i Nanotecnologia, Campus UAB, 08193 Bellaterra, Barcelona, Spain;1. Dept. of Mechanical Engineering, SVU College of Engineering, Tirupati 517502, India;2. Department of Physics, SV University, Tirupati 517502, India;3. Department of Mechanical Engineering, SVU College of Engineering, Tirupati 517502, India |
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| Abstract: | We present the observation of the peculiar antiferroelectric (AFE)-like behavior, characterized by the polarization-electric field (P−E) double hysteresis loops and zero remnant polarization (Pr), in the ferroelectric (FE) Cr-doped YMnO3 (YMCO) single crystals. The AFE-like behavior in YMCO is in sharp contrast with the FE P−E single loop with high Pr in the undoped YMnO3 (YMO). The topological cloverleaf domains with ferroelectricity are observed in both YMO and YMCO. It is revealed unambiguously that the AFE-like behavior in YMCO arises from the Cr-substitution induced domain pattern transition from type-II with nonzero net macroscopic polarization to type-I with zero net polarization, as well as the recoverable type-I domain pattern after electric field sweeping. In addition, it is found that both the recoverable energy density and energy storage efficiency are significantly enhanced due to the AFE-like behavior in YMCO compared to YMO. Our results suggest for the first time that, in addition to the mechanism of the antiparallel arrangement of adjacent electric dipoles, the AFE-like behavior can be also achieved by domain engineering in a FE, which provides a possible new strategy to obtain high energy storage performance. |
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| Keywords: | Defect Ferroelectric properties Capacitors |
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