کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5440670 | 1398235 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancement of pyroelectric properties of lead-free 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 ceramics by La doping
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhancement of pyroelectric properties of lead-free 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 ceramics by La doping Enhancement of pyroelectric properties of lead-free 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 ceramics by La doping](/preview/png/5440670.png)
چکیده انگلیسی
Lead-free 0.94NBT-0.06BT-xLa ceramics at x = 0.0-1.0 (%) were synthesized by a conventional solid-state route. XRD shows that the compositions are at a morphotropic phase boundary where rhombohedral and tetragonal phases coexist. With increasing La3+ content pyroelectric coefficient (p) and figures of merits greatly increase; however, the depolarization temperature (Td) decreases. p is 7.24 Ã 10â4C mâ2 °Câ1 at RT at x = 0.5% and 105.4 Ã 10â4C.mâ2 °Câ1 at Td at x = 0.2%. Fi and Fv show improvements at RT from 1.12 (x = 0%) to 2.65 (x10 â10 m vâ1) (x = 0.5%) and from 0.021 to 0.048 (m2.Câ1) respectively. Fi and Fv show a huge increase to 37.6 Ã 10â10 m vâ1 and 0.56 m2 Câ1 respectively at Td at x = 0.2%. FC shows values of 2.10, 2.89, and 2.98 (x10â9C cmâ2 °Câ1) at RT at 33, 100 and 1000 (Hz) respectively. Giant pyroelectric properties make NBT-0.06BT-xLa at x = 0.2% and 0.5% promising materials for many pyroelectric applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 37, Issue 4, April 2017, Pages 1459-1466
Journal: Journal of the European Ceramic Society - Volume 37, Issue 4, April 2017, Pages 1459-1466
نویسندگان
A.M. Balakt, C.P. Shaw, Qi Zhang,