کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7215268 | 1469507 | 2015 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization and dielectric properties of modified Ba0.6Sr0.4TiO3/poly(vinylidene fluoride) composites with high dielectric tunability
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
MgO-Al2O3-ZnO co-doped Ba0.6Sr0.4TiO3 (BMAZ)/poly(vinylidene fluoride) (PVDF) composites were prepared via the solution casting method. The effects of the volume fraction of BMAZ on microstructure and dielectric properties of BMAZ/PVDF composites were investigated. In addition, logarithmic mixture rule and Yamada mixing laws were used for the theoretical prediction of these properties. The permittivity and loss tangent of the composites increased and decreased from 10 to 34 and 0.07 to 0.02, respectively, with increasing amount (i.e., from 10Â vol% to 40Â vol%) of BMAZ filler. Moreover, for shape factors of 1.5-3, the permittivity values predicted by using Yamada's model exhibited close correspondence to those determined experimentally. However, the dielectric tunability of the composites improved with increasing amount of BMAZ filler. In fact, a high dielectric constant tunability of 10.9% (under a bias of 1.0Â kV/mm) were obtained for the composite with 40Â vol% BMAZ; this value was higher than those of some Ba0.6Sr0.4TiO3-based ferroelectric ceramics, which rendered the composite with 40Â vol% BMAZ suitable for tunable capacitor and phase shifter applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 118, 30 October 2015, Pages 94-100
Journal: Composites Science and Technology - Volume 118, 30 October 2015, Pages 94-100
نویسندگان
Qingqing Zhang, Feng Gao, Guoxin Hu, Chaochao Zhang, Min Wang, Mengjie Qin, Li Wang,