کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1606569 | 1516226 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Indirect and direct electrocaloric measurements of (Ba1âxCax)(Zr0.1Ti0.9)O3 ceramics (x = 0.05, x = 0.20)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Indirect and direct electrocaloric measurements of (Ba1âxCax)(Zr0.1Ti0.9)O3 ceramics (x = 0.05, x = 0.20) Indirect and direct electrocaloric measurements of (Ba1âxCax)(Zr0.1Ti0.9)O3 ceramics (x = 0.05, x = 0.20)](/preview/png/1606569.png)
چکیده انگلیسی
Electrocaloric effect in lead-free (Ba1âxCax) (Zr0.1Ti0.9)O3 ceramics (with x = 0.05 and x = 0.20) has been investigated by using two different indirect methods. In the first classic approach, the electrocaloric temperature change (ÎT) was calculated from the Maxwell relation based on measured P-E hysteresis loops recorded at different temperatures. In the second approach, the ÎT was calculated from the Maxwell relation based on pyroelectric current measurements. The advantage of such approach is that it enables direct determination of the pyroelectric coefficient, which should be otherwise calculated from the hysteresis loops in the classic approach. Direct method was finally used for verification of the obtained results. Good agreement between methods was found near the cubic-to-tetragonal phase transition temperature with a significant electrocaloric responsivity of ÎT/ÎE = 0.30 K mm/kV for the composition x = 0.05 obtained by direct method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 667, 15 May 2016, Pages 198-203
Journal: Journal of Alloys and Compounds - Volume 667, 15 May 2016, Pages 198-203
نویسندگان
H. Kaddoussi, A. Lahmar, Y. Gagou, B. Asbani, J.-L. Dellis, G. Cordoyiannis, B. Allouche, H. Khemakhem, Z. Kutnjak, M. El Marssi,