کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5485439 | 1523191 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Excitation of hypersonic acoustic waves in diamond-based piezoelectric layered structure on the microwave frequencies up to 20Â GHz
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
First ultrahigh frequency (UHF) investigation of quality factor Q for the piezoelectric layered structure «Al/(0 0 1)AlN/Mo/(1 0 0) diamond» has been executed in a broad frequency band from 1 up to 20 GHz. The record-breaking Q · f quality parameter up to 2.7 · 1014 Hz has been obtained close to 20 GHz. Frequency dependence of the form factor m correlated with quality factor has been analyzed by means of computer simulation, and non-monotonic frequency dependence can be explained by proper features of thin-film piezoelectric transducer (TFPT). Excluding the minimal Q magnitudes measured at the frequency points associated with minimal TFPT effectiveness, one can prove a rule of Qf â¼Â f observed for diamond on the frequencies above 1 GHz and defined by Landau-Rumer's acoustic attenuation mechanism. Synthetic IIa-type diamond single crystal as a substrate material for High-overtone Bulk Acoustic Resonator (HBAR) possesses some excellent acoustic properties in a wide microwave band and can be successfully applied for design of acoustoelectronic devices, especially the ones operating at a far UHF band.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 78, July 2017, Pages 162-165
Journal: Ultrasonics - Volume 78, July 2017, Pages 162-165
نویسندگان
B.P. Sorokin, G.M. Kvashnin, A.S. Novoselov, V.S. Bormashov, A.V. Golovanov, S.I. Burkov, V.D. Blank,