Hybrid antiferroelectric-ferroelectric domain walls in noncollinear antipolar oxides
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2025
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| author | Ushakov, Ivan N. Topstad, Mats Khalid, Muhammad Z. Sharma, Niyorjyoti Grams, Christoph Ludacka, Ursula He, Jiali Hunnestad, Kasper A. Sadeqi-Moqadam, Mohsen Glaum, Julia Selbach, Sverre M. Hemberger, Joachim Becker, Petra Bohatý, Ladislav Kumar, Amit Íñiguez-González, Jorge van Helvoort, Antonius T. J. Meier, Dennis |
| author_facet | Ushakov, Ivan N. Topstad, Mats Khalid, Muhammad Z. Sharma, Niyorjyoti Grams, Christoph Ludacka, Ursula He, Jiali Hunnestad, Kasper A. Sadeqi-Moqadam, Mohsen Glaum, Julia Selbach, Sverre M. Hemberger, Joachim Becker, Petra Bohatý, Ladislav Kumar, Amit Íñiguez-González, Jorge van Helvoort, Antonius T. J. Meier, Dennis |
| contents | Antiferroelectrics are emerging as advanced functional materials and are fertile ground for unusual electric effects. For example, they enhance the recoverable energy density in energy storage applications and give rise to large electromechanical responses. Here, we demonstrate noncollinearity in dipolar order as an additional degree of freedom, unlocking physical properties that are symmetry-forbidden in classical antiferroelectrics. We show that noncollinear order of electric dipole moments in K$_3$[Nb$_3$O$_6$|(BO$_3$)$_2$] leads to a coexistence of antiferroelectric and ferroelectric behaviors. Besides the double-hysteresis loop observed in antiferroelectrics, a pronounced piezoresponse and electrically switchable domains are observed, separated by atomically sharp and micrometer-long charged domain walls. Hybrid antiferroelectric-ferroelectric responses are expected in a wide range of noncollinear systems, giving a new dimension to the research on antiferroelectrics and multifunctional oxides in general. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_01622 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Hybrid antiferroelectric-ferroelectric domain walls in noncollinear antipolar oxides Ushakov, Ivan N. Topstad, Mats Khalid, Muhammad Z. Sharma, Niyorjyoti Grams, Christoph Ludacka, Ursula He, Jiali Hunnestad, Kasper A. Sadeqi-Moqadam, Mohsen Glaum, Julia Selbach, Sverre M. Hemberger, Joachim Becker, Petra Bohatý, Ladislav Kumar, Amit Íñiguez-González, Jorge van Helvoort, Antonius T. J. Meier, Dennis Materials Science Antiferroelectrics are emerging as advanced functional materials and are fertile ground for unusual electric effects. For example, they enhance the recoverable energy density in energy storage applications and give rise to large electromechanical responses. Here, we demonstrate noncollinearity in dipolar order as an additional degree of freedom, unlocking physical properties that are symmetry-forbidden in classical antiferroelectrics. We show that noncollinear order of electric dipole moments in K$_3$[Nb$_3$O$_6$|(BO$_3$)$_2$] leads to a coexistence of antiferroelectric and ferroelectric behaviors. Besides the double-hysteresis loop observed in antiferroelectrics, a pronounced piezoresponse and electrically switchable domains are observed, separated by atomically sharp and micrometer-long charged domain walls. Hybrid antiferroelectric-ferroelectric responses are expected in a wide range of noncollinear systems, giving a new dimension to the research on antiferroelectrics and multifunctional oxides in general. |
| title | Hybrid antiferroelectric-ferroelectric domain walls in noncollinear antipolar oxides |
| topic | Materials Science |
| url | https://arxiv.org/abs/2507.01622 |