Effects of cooling rate on the electrical properties of Pb-free BF-BT ceramics

被引：7

作者：

Khan, Salman Ali ^{[1
]}

Akram, Fazli ^{[1
]}

Malik, Rizwan Ahmed ^{[2
]}

Hussain, Ali ^{[3
]}

Kim, Jun Chan ^{[1
]}

Song, Tae Kwon ^{[1
]}

Kim, Won-Jeong ^{[4
]}

Sung, Yeon Soo ^{[5
]}

Kim, Myong-Ho ^{[1
]}

Lee, Soonil ^{[1
]}

机构：

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

[2] UET Taxila, Dept Met & Mat Engn, Taxila, Pakistan

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

[4] Changwon Natl Univ, Dept Phys, Gyeongnam, South Korea

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

来源：

FERROELECTRICS | 2019年 / 553卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

Lead-free; dielectric; ferroelectric; piezoelectric properties; ELECTROMECHANICAL PROPERTIES; TEMPERATURE; STABILITY;

D O I：

10.1080/00150193.2019.1683498

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ferroelectric, piezoelectric and dielectric properties of the air- and water-quenched samples of 0.65Bi(1.05)Fe(1-)(x)Ga(x)O(3)-0.35BaTiO(3) (x = 0 and 0.02) lead-free ceramics were investigated. X-ray diffraction patterns showed that the Ga modification and different cooling rates during sintering did not cause any significant change in the crystal structure. It is believed that the significant enhancement of ferroelectric and piezoelectric properties is attributed to the relaxation of the lattice strain induced in the samples, to better understand the quenching effects and thereby improvement in electrical properties, by modification and reduction of associated defects concentration with rapid cooling. For the optimum composition (x = 0.02), an enhanced piezoelectric constant d(33) of 156 pC/N was observed from the water quenched sample.

引用

页码：76 / 82

页数：7

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