تقرير
Origin of the Large Negative Electrocaloric Effect in Antiferroelectric PbZrO3
| العنوان: | Origin of the Large Negative Electrocaloric Effect in Antiferroelectric PbZrO3 |
|---|---|
| المؤلفون: | Vales-Castro, Pablo, Faye, Romain, Vellvehi, Miquel, Nouchokgwe, Youri, Perpinà, Xavier, Caicedo, J. M., Jordà, Xavier, Roleder, Krystian, Kajewski, Dariusz, Perez-Tomas, Amador, Defay, Emmanuel, Catalan, Gustau |
| المصدر: | Phys. Rev. B 103, 054112 (2021) |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | We have studied the electrocaloric response of the archetypal antiferroelectric PbZrO3 as a function of voltage and temperature in the vicinity of its antiferroelectric-paraelectric phase transition. Large electrocaloric effects of opposite signs, ranging from an electro-cooling of -3.5 K to an electro-heating of +5.5 K, were directly measured with an infrared camera. We show by calorimetric and electromechanical measurements that the large negative electrocaloric effect comes from an endothermic antiferroelectric-ferroelectric switching, in contrast to dipole destabilization of the antiparallel lattice, previously proposed as an explanation for the negative electrocaloric effect of antiferroelectrics. Comment: Article (17 pages) and supplemental material (12 pages) present in .pdf file |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.103.054112 |
| URL الوصول: | http://arxiv.org/abs/2009.02184 |
| رقم الأكسشن: | edsarx.2009.02184 |
| قاعدة البيانات: | arXiv |
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