کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1478251 991213 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Barium modified lead lanthanum strontium zirconium niobium titanate for dielectric and piezoelectric properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Barium modified lead lanthanum strontium zirconium niobium titanate for dielectric and piezoelectric properties
چکیده انگلیسی

The isovalent Ba2+ modified lead lanthanum strontium zirconium niobium titanate (PLSZNT) solid solutions were prepared by solid-state reaction method with the compositional formula [Pb1−x−w−yLaxSrwBay][(ZrzTi1−z)(1−(x/4)−(5/4)k)Nbk]O3 where Ba content, y, was varied from 0, 0.5, 1 and 1.5 mol%. X-ray diffraction (XRD) studies revealed that all the samples have ferroelectric tetragonal structure (FETET). The presence of multiple ions at Pb-site enhanced grain growth and further addition of Ba concentration resulted in restrained grain growth. Dielectric studies suggested that the ɛRT increased up to 1 mol% Ba while Tc has shown a continuous decreasing trend throughout the series. The piezoelectric parameters as a function of grain growth were characterized. The optimum piezoelectric charge coefficient (d33 = 538 pC/N) and piezoelectric planar coupling coefficient (kp = 0.521) was found to be in 1 mol% Ba modified PLSZNT ceramic, respectively, and this composition may be suitable for possible sensor and actuator applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 27, Issue 10, 2007, Pages 3141–3147
نویسندگان
, ,