تقرير
Studies on the high-temperature ferroelectric transition of multiferroic hexagonal manganite RMnO3
| العنوان: | Studies on the high-temperature ferroelectric transition of multiferroic hexagonal manganite RMnO3 |
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| المؤلفون: | Sim, Hasung, Jeong, Jaehong, Kim, Haeri, Cheong, S-W, Park, Je-Geun |
| المصدر: | J. Phys.: Condens. Matter 30 (2018) 105601 (8pp) |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | Hexagonal manganites are multiferroic materials with two highly-dissimilar phase transitions: a ferroelectric transition (from P63/mmc to P63cm) at a temperature higher than 1000 K and an antiferromagnetic transition at TN=65 - 130 K. Despite its critical relevance to the intriguing ferroelectric domain physics, the details of the ferroelectric transition are yet not well known to date primarily because of the ultra-high transition temperature. Using high-temperature X-ray diffraction experiments, we show that the ferroelectric transition is a single transition of abrupt order and R-Op displacement is the primary order parameter. This structural transition is then simultaneously accompanied by MnO5 tilting and the subsequent development of electric polarization. Comment: 15 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1088/1361-648X/aaab87 |
| URL الوصول: | http://arxiv.org/abs/1802.01236 |
| رقم الأكسشن: | edsarx.1802.01236 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1088/1361-648X/aaab87 |
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