کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5460968 | 1516200 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Li-modified Ba0.99Ca0.01Zr0.02Ti0.98O3 lead-free ceramics with highly improved piezoelectricity
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Li-modified Ba0.99Ca0.01Zr0.02Ti0.98O3 lead-free ceramics with highly improved piezoelectricity Li-modified Ba0.99Ca0.01Zr0.02Ti0.98O3 lead-free ceramics with highly improved piezoelectricity](/preview/png/5460968.png)
چکیده انگلیسی
In this paper, Ba0.99Ca0.01Zr0.02Ti0.98O3 lead-free ceramics with highly enhanced piezoelectricity have been obtained at an optimized Li+ ion doping content by means of elaborately adjusting the microstructure. The introduction of Li+ ions significantly improves the sinterability due to the emergence of oxygen vacancies and the formation of eutectic liquid phase. The sintering temperature is reduced by 100-150 °C compared with other literatures. The highest piezoelectric coefficient d33 and planar mode electromechanical coupling factor kp can be increased up to 340 pC/N and 44%, which are stem from outstanding ferroelectric activity (Pr = 9.8 μC/cm2, Ec = 220 V/mm) and dielectric property (εr = 2250, tan δ = 1.35%). In addition, the Curie temperature Tc is still maintained about 120 °C. A plausible mechanism concerning the defect dipoles, polarization rotation, and ferroelectric phase transition is constructed in this work to well state above mentioned phenomena.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 694, 15 February 2017, Pages 745-751
Journal: Journal of Alloys and Compounds - Volume 694, 15 February 2017, Pages 745-751
نویسندگان
Yong Zhang, Hua-Jun Sun, Wen Chen,