کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624160 | 989584 | 2016 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dielectric relaxation properties of PbTiO3-multiwalled carbon nanotube composites prepared by a sol-gel process
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Dielectric relaxation properties of PbTiO3-multiwalled carbon nanotube composites prepared by a sol-gel process Dielectric relaxation properties of PbTiO3-multiwalled carbon nanotube composites prepared by a sol-gel process](/preview/png/10624160.png)
چکیده انگلیسی
Dielectric composites fabricated by combining multi-walled carbon nanotubes (MWCNT) and PbTiO3 (PTO) powder were prepared using a sol-gel process. Well-dispersed PTO powder with various volume ratios of MWCNT was compressed to form a pellet, and then silver electrodes were coated on both sides for electrical measurements. The PTO-MWCNT composite with 0.4Â vol% MWCNT showed the highest dielectric constant (912 at 1Â kHz), which is approximately 25 times larger than that (37 at 1Â kHz) of a pure PbTiO3 pellet. Furthermore, a strong frequency dependence of the dielectric constant in the low frequency range was shown for the PTO-MWCNT composites. Interfacial effects related to dielectric relaxation in composite materials were used to explain an observed increase of the dielectric constant near the percolation threshold.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 7, 15 May 2016, Pages 8165-8169
Journal: Ceramics International - Volume 42, Issue 7, 15 May 2016, Pages 8165-8169
نویسندگان
Jin Ho Kwak, Jin Kyu Han, Sin Wook Kang, Trent Allen Johnson, Sang Don Bu,