|
Proceedings of the Yerevan State University, series Physical and Mathematical Sciences, 2014, Issue 3, Pages 62–65
(Mi uzeru74)
|
|
|
|
Physics
Behavior of dielectric permittivity of piezomonocrystall near the resonant frequency
V. G. Mirzoyana, A. A. Sahakyanb, P. V. Mirzoyana a Institute of Applied Problems of Physics of the National Academy of Sciences of the Republic of Armenia, Yerevan
b Alikhanyan National Research Laboratory (YerPhi), Yerevan
Abstract:
The behavior of the quartz dielectric permittivity ($\varepsilon$) depending on the frequency of the applied alternating electric field is investigated. Peculiarities of quartz ($\varepsilon$) near the resonant frequency in the range from $1 \ kHz$ to $1 \ MHz$ and shows that the excitation of the piezoelectric crystal odd resonance frequency value of the real part of permittivity repeatedly ($\varepsilon^{\prime}$ ) increases, when the driving frequency of the crystal is close to the resonance frequency of the low frequency and a further increase in the frequency of the alternating electric field, the value of ($\varepsilon^{\prime}$ ) abruptly changes sign, becoming negative. The absolute value of ($\varepsilon^{\prime}$ ) increases by more than an order of magnitude. With further increase in the excitation frequency value of ($\varepsilon^{\prime}$ ) increases continuously and monotonically and tends to the value off resonance. Similar results were obtained for the odd high harmonics. The imaginary part of permittivity ($\varepsilon^{\prime\prime}$) negligible in the vicinity of the resonance frequencies of the odd. In the even of resonance frequencies of visible changes of ($\varepsilon$ ) is not observed.
Keywords:
dielectric permittivity, resonant frequency, piezoelectric crystals, capacitance, inductance.
Received: 06.09.2013 Accepted: 19.05.2014
Citation:
V. G. Mirzoyan, A. A. Sahakyan, P. V. Mirzoyan, “Behavior of dielectric permittivity of piezomonocrystall near the resonant frequency”, Proceedings of the YSU, Physical and Mathematical Sciences, 2014, no. 3, 62–65
Linking options:
https://www.mathnet.ru/eng/uzeru74 https://www.mathnet.ru/eng/uzeru/y2014/i3/p62
|
Statistics & downloads: |
Abstract page: | 85 | Full-text PDF : | 44 | References: | 37 |
|