Antiferroelectric single crystal of La_0.011Pb_0.984(Lu_1/2Nb_1/2)O₃ with high energy storage density

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• 作者：Xiaoming Yang^a ; Chao He^a ; Ying Liu^a ; Xiuzhi Li^a ; Zujian Wang^a ; Shujuan Han^b ; Shilie Pan^b ; Xifa Long^a ; ^b ;
• 关键词：Electrical properties ; Ferroelectric properties ; Perovskites
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：42
• 期：8
• 页码：10472-10475
• 全文大小：1162 K

文摘

High quality La_0.011Pb_0.984(Lu_1/2Nb_1/2)O₃ (La-PLN) antiferroelectric (AFE) single crystal was successfully obtained by a top-seed solution growth technique. The crystal structure adopts an orthorhombic phase and two sets of superlattice reflections due to B-site ordering and anti-parallel cation displacement are observed clearly and distinguished by the X-ray diffraction patterns (XRD). The Curie temperature T_C is near 221 °C with a low dielectric constant (about 371). The energy storage density decreases along with the temperature increasing and the maximum energy storage density is up to 5.03 J/cm³ at 25 °C. The results indicate that the La-PLN single crystal is a promising candidate for the AFE energy storage application.