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High energy storage properties and dielectric behavior of (Bi0.5Na0.5)(0.94)Ba0.06Ti1 (-) (x)(Al0.5Nb0.5)(x)O-3 lead-free ferroelectric ceramics
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| 【文章作者】Zhao, Yangyang;Xu, Jiwen;Zhou, Changrong;Yuan, Changlai;Li, Qingning;Chen, Guohua;Wang, Hua;Yang, Li |
| 【文章摘要】 The influence of B-site (Al0.5Nb0.5)(4+) complex-ion substitution on the phase transition, microstructure, dielectric, ferroelectric, and energy storage properties of (Bi0.5Na0.5)(0.94)Ba0.06Ti1-x(Al0.5Nb0.5)(x)O-3 (BNBT-xAN) ceramics was systematically investigated. BNBT-xAN ceramics showed single-phase perovskite structure without an obvious phase transition after adding AN. Compact and uniform microstructure with almost the same grain morphology and size was obtained. The AN doping produced slimmer P-E loops and thus improved energy storage property. At the composition of x=0.04 and electric field of 70 kV/cm, the energy storage density achieved the optimum value of 0.70 J/cm(3). The temperature dependence of dielectric constant epsilon(r) and dielectric loss tan delta illustrated a noticeable diffuse phase transition characteristics in BNBT-xAN ceramics. These results indicated that the BNBT-AN system may be a promising lead-free material for high energy storage density capacitor. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
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【卷】42 【ISSUE】2 Pt.A 【ISSUEID】815C0073
【文章期份】2016
【发布日期】2016/8/11 17:03:01
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