کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8032604 1517955 2018 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electric-field-dependent mechanical and electrical properties of barium strontium titanate films for tunable device applications
ترجمه فارسی عنوان
خواص مکانیکی و الکتریکی وابسته به میدان الکتریکی نوارهای تیتانات استرانسیم باریم برای کاربردهای قابل تنظیم دستگاه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
Developing the novel electric field tunable, reconfigurable, adaptive and frequency-agile microwave devices with specific properties involves technological and scientific activities in the studying of material properties. Measurements of its properties could be a difficult and expensive issue, especially when it concerns thin-film ferroelectrics. Their electromechanical properties change significantly under applied DC bias field. The material coefficients of barium strontium titanate thin films are still unknown; therefore, it is expedient to carry out their calculations. In the present paper, the linear equations of piezoelectric effect have been written for thin barium strontium titanate films under DC bias electric field in paraelectric phase (induced piezoelectric effect) based on the grand potential of Landau theory of phase transitions. The dependence of material constants for thin films of Ba0.65Sr0.35TiO3 (BST65) on the applied planar field at different lattice misfit strains has been studied for this phase. All induced piezoelectric moduli show extreme behavior during field alteration. Elastic moduli show similar abnormal behavior. The alterations increase as misfit strain is approaching the critical value.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 657, 1 July 2018, Pages 8-15
نویسندگان
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