| Autor: |
Akram, Fazli, Malik, Rizwan Ahmed, Khan, Salman Ali, Hussain, Ali, Lee, Soonil, Lee, Myang-Hwan, In, Choi Hai, Song, Tae-Kwon, Kim, Won-Jeong, Sung, Yeon Soo, Kim, Myong-Ho |
| Zdroj: |
Journal of Electroceramics; Dec2018, Vol. 41 Issue 1-4, p93-98, 6p |
| Abstrakt: |
In the present work, composition dependent crystal structure, ferroelectric, piezoelectric, and temperature dependent dielectric properties of the BiGaO3-modified (1-x)(0.65Bi1.05FeO3-0.35BaTiO3) (BFBT35-xBG, where x = 0.00-0.03) lead-free ceramics were systematically investigated by solid-state reaction method, followed by water quenching process. The substitution of BG successfully diffuses into the lattice of the BFBT ceramics, without changing the pseudo-cubic structure of the samples. The scanning electron microscopy (SEM) results revealed that the average grain size was increased with BG-content in BFBT system. The BFBT-xBG ceramics showed a maximum in permittivity (ɛmax) at temperatures (Tmax) above 500 °C in the compositional range of 0.00 ≤ x ≤ 0.03. The electro-strain is measured to be 0.125% (d*33 ~ 250 pm/V) under unipolar fields (5 kV/mm) for BFBT-0.01BG ceramics. The same composition (x = 0.01), large static piezoelectric constant (d33 ~ 165 pC/N) and electromechanical coupling factor (kp ~ 25%) were obtained. The above investigated characterizations suggests that BFBT-BG material is favorable for piezoelectric and high temperature applications. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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