کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10639921 | 995788 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dielectric, ferroelectric and piezoelectric properties of Bi0.5Na0.5TiO3-(Ba0.7Ca0.3)TiO3 ceramics at morphotropic phase boundary composition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
(1 â x)Bi0.5Na0.5TiO3-x(Ba0.7Ca0.3)TiO3 (BNT-xBCT, 0 â¤Â x â¤Â 0.15) solid solutions have been synthesized by a conventional solid state sintering method for obtaining a morphotropic phase boundary (MPB) with good piezoelectric properties. X-ray diffraction patterns reveal that a MPB of rhombohedral and tetragonal phases is formed at compositions 0.09 â¤Â x â¤Â 0.12. Addition of BCT into BNT greatly lowered coercive field Ec without degrading remanent polarization Pr. The specimen with x = 0.09 has the good piezoelectric properties: d33 = 125 pC/N and kp = 0.33. A modified Curie-Weiss law was used to fit the dielectric constant of BNT-xBCT ceramics, and a frequency dispersion was observed during the phase transitions from antiferroelectric to paraelectric in specimens with x exceeding 0.06.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 176, Issue 3, 25 February 2011, Pages 260-265
Journal: Materials Science and Engineering: B - Volume 176, Issue 3, 25 February 2011, Pages 260-265
نویسندگان
Jingna Yang, Peng Liu, Xiaobing Bian, Huixia Jing, Yajuan Wang, Yu Zhang, Yi Wu, Wuhui Song,