کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9829370 | 1524489 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dielectric and piezoelectric properties of highly (1Â 0Â 0)-oriented BaTiO3 thin film grown on a Pt/TiOx/SiO2/Si substrate using LaNiO3 as a buffer layer
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Dielectric and piezoelectric properties of highly (1Â 0Â 0)-oriented BaTiO3 thin film grown on a Pt/TiOx/SiO2/Si substrate using LaNiO3 as a buffer layer Dielectric and piezoelectric properties of highly (1Â 0Â 0)-oriented BaTiO3 thin film grown on a Pt/TiOx/SiO2/Si substrate using LaNiO3 as a buffer layer](/preview/png/9829370.png)
چکیده انگلیسی
BaTiO3 thin films were deposited onto a Pt/TiOx/SiO2/Si substrate via the chemical solution deposition method, with LaNiO3 as a buffer layer. Effects of the concentration of precursor solution and LaNiO3 buffer layer on crystallinity and orientation degree of BaTiO3 thin films have been investigated. At 0.2Â mol/l concentration, X-ray diffraction analyses show that the BaTiO3 films are highly (1Â 0Â 0)-oriented. The crystalline quality of BaTiO3 is significantly improved with LaNiO3 as a buffer layer. Smooth surface with evenly distributed grains as small as about 80Â nm were observed by atomic force microscope. The electrical properties of the (1Â 0Â 0)-oriented films prepared by the one-step chemical solution deposition process have been studied. BaTiO3 thin films with a thickness of about 140Â nm show a dielectric constant of â¼340 and a loss tangent of â¼2.9%. The BaTiO3 films show a good insulative characteristic against the applied field. The introduction of LaNiO3 buffer layer will decrease the onset of the high current emission of BaTiO3 films. A piezoelectric coefficient of 30Â pm/V has been detected by the atomic force microscope on the bare film, which is twice as large as that of BaTiO3 thin film with random orientation. These results indicate that the highly (1Â 0Â 0)-oriented BaTiO3 should be a promising candidate as the lead-free thin film piezoelectrics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 284, Issues 1â2, 15 October 2005, Pages 190-196
Journal: Journal of Crystal Growth - Volume 284, Issues 1â2, 15 October 2005, Pages 190-196
نویسندگان
Yiping Guo, Kazuyuki Suzuki, Kaori Nishizawa, Takeshi Miki, Kazumi Kato,