Effective A-site modulation and crystal phase evolution for high ferro/piezoelectric performance in ABO3 compounds: Yttrium-doped BiFeO3-BaTiO3

被引：31

作者：

Ahmed, Tauseef ^{[1
,4
]}

Khan, Salman Ali ^{[1
]}

Kim, Mingyu ^{[1
]}

Akram, Fazli ^{[3
]}

Park, Hong Woo ^{[1
]}

Hussain, Ali ^{[2
]}

Qazi, Ibrahim ^{[4
]}

Lim, Dong Hwan ^{[5
]}

Jeong, Soon-Jong ^{[5
]}

Song, Tae Kwon ^{[1
]}

Kim, Myong-Ho ^{[1
]}

Lee, Soonil ^{[1
]}

机构：

[1] Changwon Natl Univ, Dept Mat Convergence & Syst Engn, Sch Mat Sci & Engn, Chang Won 51140, Gyeongnam, South Korea

[2] Inst Space Technol, Dept Space Sci, Islamabad 44000, Pakistan

[3] North Carolina Cent Univ, CREST Ctr, Dept Math & Phys, Durham, NC 27707 USA

[4] Inst Space Technol, Dept Mat Sci & Engn, Islamabad 44000, Pakistan

[5] Korea Electrotechnol Res Inst KERI, Energy Convers Res Ctr, Chang Won 51543, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 933卷

基金：

新加坡国家研究基金会;

关键词：

Lead-free piezoelectrics; Ferroelectrics; BiFeO; 3-BaTiO; 3; Oxygen vacancy; Metastatic phase; FREE PIEZOELECTRIC CERAMICS; FIELD-INDUCED STRAIN; SINTERING TEMPERATURE; ELECTRICAL-PROPERTIES; PIEZOCERAMICS; BEHAVIORS; ORIGIN; GA;

D O I：

10.1016/j.jallcom.2022.167709

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：

Eco-friendly perovskite-structured compounds of 0.65Bi(1-x)YxFeO3-0.35BaTiO3 (BYxF-35BT, x = 0.0 0-0.03) were investigated systematically in terms of ferroelectric, piezoelectric, and dielectric properties and re-lated crystal structure. X-ray diffraction and Rietveld refinement revealed that lattice anisotropy increased from undoped BF-35BT ceramic and transformed to a mixture of dominant tetragonal (T) and rhombohedral (R) symmetry and then pseudocubic-like structure with increasing the value of x. A remarkable enhance-ment was noticed in electromechanical performance for x = 0.01, having d33 = 152 pC/N, and d*33 = 505 pm/ V at applied field of 5.5 kV/mm at room temperature (RT). The d33, d*33, and Tm for x = 0.01 increased to 189 pC/N at 100 degrees C, 904 pm/V at 3.5 kV/mm at 120 degrees C, and 410 degrees C, respectively. It is believed that enhanced piezoelectric performance is mainly attributed to reduced oxygen vacancy concentration [VO ] middotmiddot and metastatic phase with high lattice anisotropy, and thereby low activation energy for domain rotation with a combi-natory effect of the enhanced relative density and optimum grain size.(c) 2022 Elsevier B.V. All rights reserved.

引用

页数：12

共 75 条

[1] Low temperature sintering and dielectric properties of LaAlO3-BaSnO3-based microwave dielectrics [J].