Room-Temperature Antiferroelectricity in Multiferroic Hexagonal Rare-Earth Ferrites
| العنوان: | Room-Temperature Antiferroelectricity in Multiferroic Hexagonal Rare-Earth Ferrites |
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| المؤلفون: | Tetsuya Hasegawa, Shishin Mo, Tsukasa Katayama, Yosuke Hamasaki, Jun Younes Louhi Kasahara, Shintaro Yasui, Mitsuru Itoh, Akira Chikamatsu |
| المصدر: | ACS Applied Materials & Interfaces. 13:4230-4235 |
| بيانات النشر: | American Chemical Society (ACS), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 010302 applied physics, Materials science, Condensed matter physics, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Ferroelectricity, Pulsed laser deposition, Phase (matter), Electric field, 0103 physical sciences, Antiferroelectricity, Polar, General Materials Science, Multiferroics, Thin film, 0210 nano-technology |
| الوصف: | The antiferroelectric (AFE) phase, in which nonpolar and polar states are switchable by an electric field, is a recent discovery in promising multiferroics of hexagonal rareearth manganites (ferrites), h-RMn(Fe)O3. However, this phase has so far only been observed at 60−160 K, which restricts key investigations into the microstructures and magnetoelectric behaviors. Herein, we report the successful expansion of the AFE temperature range (10−300 K) by preparing h-DyFeO3 films through epitaxial stabilization. Room-temperature scanning transmission electron microscopy reveals that the AFE phase originates from a nanomosaic structure comprising AFE P3̅c1 and ferroelectric P63cm domains with small domain sizes of 1− 10 nm. The nanomosaic structure is stabilized by a low c/a ratio derived from the large ionic radius of Dy3+. Furthermore, weak ferromagnetism and magnetocapacitance behaviors are observed. Below 10 K, the film exhibits an M-shaped magnetocapacitance versus magnetic field curve, indicating unusual magnetoelectric coupling in the AFE phase. |
| تدمد: | 1944-8252 1944-8244 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d25a382efea993bae4888173bbd613f https://doi.org/10.1021/acsami.0c20924 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....4d25a382efea993bae4888173bbd613f |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 19448252 19448244 |
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