کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1522849 | 995316 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Piezoelectric properties and thermal stabilities of cobalt-modified potassium bismuth titanate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Piezoelectric properties and thermal stabilities of cobalt-modified potassium bismuth titanate Piezoelectric properties and thermal stabilities of cobalt-modified potassium bismuth titanate](/preview/png/1522849.png)
چکیده انگلیسی
The cobalt-modified potassium bismuth titanate (K0.5Bi4.5Ti4O15, KBT) piezoelectric ceramics have been prepared using conventional solid-state reaction. X-ray diffraction analysis revealed that the cobalt-modified KBT ceramics have a pure four-layer (m = 4) Aurivillius-type structure. The dielectric, ferroelectric, and piezoelectric properties of cobalt-modified KBT ceramics were investigated in detail. The piezoelectric activities of KBT ceramics were significantly improved by the cobalt modification. The reasons for piezoelectric activities enhancement with cobalt modification were given. The piezoelectric coefficient d33 and Curie temperature Tc for the 5 mol% cobalt-modified KBT ceramics (KBT-Co5) were found to be 28 pC/N and 575 °C, respectively. The DC resistivity, frequency constants (Np and Nt), and electromechanical properties at elevated temperature were investigated, indicating the cobalt-modified KBT piezoelectric ceramics possess stable piezoelectric properties up to 500 °C. The results show the cobalt-modified KBT ceramics are potential materials for high temperature piezoelectric applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 140, Issue 1, 15 June 2013, Pages 260-265
Journal: Materials Chemistry and Physics - Volume 140, Issue 1, 15 June 2013, Pages 260-265
نویسندگان
Zhen-Lei Guo, Chun-Ming Wang, Tian-Long Zhao, Si-Long Yu, Zhao-Peng Cao,