کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1459054 989588 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of LaNiO3/SrTiO3/LaNiO3 capacitor structure through sol–gel process
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Preparation of LaNiO3/SrTiO3/LaNiO3 capacitor structure through sol–gel process
چکیده انگلیسی

In this paper, SrTiO3/LaNiO3 (STO/LNO) bilayer films were prepared on lanthanum aluminate (LAO) substrates by use of the sol–gel technique. An array of LNO electrodes with diameters of 200 μm was prepared on the surface of STO/LNO bilayer films. Therefore, LaNiO3/SrTiO3/LaNiO3 (LNO/STO/LNO), a capacitor structure with symmetrical top and bottom electrodes, was obtained. The XRD analysis showed that the obtained capacitor structure has a biaxial texture. The dielectric test suggested that the relative dielectric constant of the LNO/STO/LNO structure is symmetric, has a high tunability, and has a low dielectric dissipation factor (tan δ) in response to varying electric field bias. As the temperature decreased, the relative dielectric constant of the STO film increased, the tunability increased, and the tan δ decreased. At test conditions of 80 K and 100 kH, the tunability and the figure of merit (FOM) reached 56% and 107, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 8, June 2016, Pages 9762–9768
نویسندگان
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