کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10634055 | 993305 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced ferroism in mechanically processed and environmentally friendly Ba0.30Na0.70Ti0.30Nb0.70O3 ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Environmentally friendly Ba0.30Na0.70Ti0.30Nb0.70O3 ceramics were processed by high-energy ball milling and oxidizing heat treatments. Their pyroelectric, dielectric and ferroelectric properties were significantly improved by means of preventing residual phases through the synthesis protocol. These samples showed considerable improvements in the dielectric constant and pyroelectric coefficient, which reached 6000 (at 1Â kHz) and 170Â nCÂ cmâ2Â Kâ1 at 300Â K, respectively. The potential for the application of Ba0.30Na0.70Ti0.30Nb0.70O3 as an electrocaloric material was demonstrated by isothermal entropy change (ÎSTÂ =Â 0.026Â JÂ kg-1Â K-1) measurements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 66, Issue 8, April 2012, Pages 542-545
Journal: Scripta Materialia - Volume 66, Issue 8, April 2012, Pages 542-545
نویسندگان
R.B. Zampiere, G.S. Dias, L.F. Cótica, I.A. Santos,