کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7898030 | 1510131 | 2018 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Piezoresponse and microstructure of BaTaO2N ceramics
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Piezoresponse force microscopy was conducted on a polished slice of the perovskite oxynitride ceramic BaTaO2N after ammonolysis at a bias voltage ofâ¯Â±â¯10â¯V. The ceramic surface was relatively porous because it was readily hydrolyzed by ambient humidity. While there was no piezoresponse on the surface of the ultrathin slice, a piezoresponse was clearly observed just below the surface of a thick slice. The response was enhanced in a denser sample. It increased with measuring voltage up to 7â¯V, and then gradually decreased up to 9â¯V. The response also gradually decreased with time but persisted even after 150â¯min at a measuring voltage of 6â¯V. Microstructural characterization revealed well-sintered grains, about 100â¯nm in size, in a relatively dense BaTaO2N structure. High-porosity BaTaO2N did not show any piezoresponse because its porous surface was easily hydrolyzed. A weak piezoresponse was observed for an electrically conductive slice obtained from deep inside a relatively dense BaTaO2N ceramic after ammonolysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 38, Issue 10, August 2018, Pages 3478-3482
Journal: Journal of the European Ceramic Society - Volume 38, Issue 10, August 2018, Pages 3478-3482
نویسندگان
Akira Hosono, Yuji Masubuchi, Yuki Nagamine, Takeshi Shibahara, Shinichi Kikkawa,