| نویسندگان | Thi Hinh Dinh-محمدرضا بافنده -Jin-Kyu Kang-Chang-Hyo Hong-Wook Jo-Jae-Shin Lee |
|---|---|
| نشریه | CERAM INT |
| نوع مقاله | Full Paper |
| تاریخ انتشار | ۲۰۱۵-۳-۰۱ |
| رتبه نشریه | ISI |
| نوع نشریه | چاپی |
| کشور محل چاپ | ایران |
| نمایه نشریه | ISI |
چکیده مقاله
Effects of Li- and La-doping on the structural, ferroelectric, and strain properties of Bi1/2(Na0.82K0.18)1/2TiO3 (BNKT) ceramics were compared. In this study, Li+ was selected as the A-site acceptor and La3+ as the A-site donor. Li doping resulted in hardening of BNKT with an improved mechanical quality factor (Qm) of 253 and an increased coercive field (Ec), while La doping brought about a softening effect that was evidenced by an improved piezoelectric constant (d33) of 172 pC/N and decreased Ec. In addition, the large normalized bipolar strain (Smax/Emax) was obtained up to 650 pm/V in 3 mol% La-doped BNKT.