Less temperature-dependent high dielectric and energy-storage properties of eco-friendly BiFeO3-BaTiO3-based ceramics

被引：51

作者：

Akram, Fazli ^{[1
]}

Kim, Junchan ^{[1
]}

Khan, Salman Ali ^{[1
]}

Zeb, Aurang ^{[2
,3
]}

Yeo, Hong Goo ^{[4
]}

Sung, Yeon Soo ^{[5
]}

Song, Tae Kwon ^{[1
]}

Kim, Myong-Ho ^{[1
]}

Lee, Soonil ^{[1
]}

机构：

[1] Changwon Natl Univ, Sch Mat Sci & Engn, Gyeongnam 51140, South Korea

[2] Univ Leeds, Sch Chem & Proc Engn, Leeds LS2 9JT, W Yorkshire, England

[3] Islamia Coll, Dept Phys, Peshawar, KP, Pakistan

[4] DGIST, Dept Robot Engn, Daegu 42988, South Korea

[5] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 37673, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 818卷

基金：

新加坡国家研究基金会;

关键词：

BiFeO3; BaTiO3; Dielectric; Ferroelectric; Relaxor; Energy storage; STABLE RELATIVE PERMITTIVITY; PIEZOELECTRIC PROPERTIES; FERROELECTRIC PROPERTIES; ELECTROMECHANICAL PROPERTIES; ANTIFERROELECTRIC CERAMICS; ELECTRICAL-PROPERTIES; THERMAL-STABILITY; RELAXOR BEHAVIOR; LARGE-STRAIN; DEGREES-C;

D O I：

10.1016/j.jallcom.2019.152878

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effects of eco-friendly (BiNa0.K-84(0.16))(0.48)Sr0.04TiO3 (BNKS)-content in 0.65Bi(1.05)FeO(3)-0.35BaTiO3 (BFBT) dielectrics were investigated by following simple solid state fabrication route. By the introduction of BNKS in BFBT matrix the average grain size was significantly reduced, with relatively high dense microstructure (relative density > 94%). The BNKS-modified BFBT dielectrics demonstrated thermally-stable epsilon(r) (670-1005, from 30 degrees C to 500 degrees C), high T-max (424 degrees C-465 degrees C), colossal epsilon(r-max) (58880-69226), and epsilon(r-mid) (2891-5652 +/- 15%) across the broad range of temperature from 244 degrees C to 500 degrees C. At the optimum composition (x = 0.10) the temperature-dependent (30 degrees C-150 degrees C) substantially high energy-storage density (W-store similar to 0.81 J/cm(3)) and efficiency (eta > 60%) in bulk ceramics were observed. The thermally-stable dielectric and energy storage properties suggest that present investigated dielectrics can be promising candidates for high temperature dielectric applications and power electronics. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：12

共 95 条

[21] Structure, dielectric and relaxor propertieS in lead-free ST-NBT ceramics for high energy storage applications [J].