Dynamical and passive characteristics of the Ag/TlGaSeS/Ag RF resonators

Qasrawi, A. F.
Elayyat, S. M. S.
Hasanlı, Nızamı
Ag contacts on the surface of the TlGaSeS single crystals are observed to exhibit Schottky characteristics. The ideality factor of the Ag/ TlGaSeS/Ag device decreased from 5.2 to 1.3 by the reduction of series resistance effect on the I-V characteristics. Cheung's model analysis revealed a series resistance and barrier height of 40.6 KO and 0.32 V, respectively. The device was run on the passive mode by injection with an alternating ac signal of variable frequency in the frequency range of 0-120 MHz and recoding the device capacitance. Several resonance-antiresonance positions in the range of 27-350 KHz were observed. The tangent loss factor of the passive device was observed to decrease with increasing frequency. It exhibited a very low loss value of the order of 10-5 at 120 MHz. Such property is a characteristic of high performance tunable device being suitable as processor clock controller.


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Qasrawi, A. F.; Abu-Zaid, Samah F.; Ghanameh, Salam A.; Hasanlı, Nızamı (2014-05-01)
The room temperature, dark and photo-dielectric properties of the novel crystals TlGaSeS are investigated in the frequency, intensity and biasing voltage having ranges of similar to 1-120 MHz, 14-40 klux and 0-1 V, respectively. The crystals are observed to exhibit a dark high frequency effective dielectric constant value of similar to 10.65 x 10(3) with a quality factor of similar to 8.84 x 10(4) at similar to 120 MHz. The dielectric spectra showed sharp resonance-antiresonance peaks in the frequency range...
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QASRAWI, ATEF FAYEZ HASAN; Hasanlı, Nızamı (2012-07-15)
The temperature effects on the capacitance-voltage characteristics as well as the room temperature capacitance-frequency characteristics of TlGaTe2 crystals are investigated. A very wide range of linearly varying tunable capacitance from 6.0 mu F to 60 pF was recorded. The capacitance-voltage characteristics, being recorded in the temperature range of 290-380 K, revealed a linear increase in the build in voltage associated with exponential decrease in the density of non-compensated ionized carriers with inc...
Metamaterial absorber-based multisensor applications using a meander-line resonator
AKGÖL, OĞUZHAN; ALTINTAŞ, OLCAY; Dalkilinc, Elif Eda; ÜNAL, EMİN; KARAASLAN, MUHARREM; Sabah, Cumali (2017-08-01)
A metamaterial (MTM) absorber-based multifunctional sensor is numerically and experimentally realized using meander-line resonators. The proposed sensor device can be used to measure pressure, density, and humidity with perfect signal absorption characteristics at the frequency range of X band. The structure consists of a sensor layer sandwiched between two dielectric slabs. The sensor layer is used to detect unknown environmental parameters with respect to the electromagnetic responses of the material unde...
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Unsoy, Gozde; Gündüz, Ufuk; Oprea, Ovidiu; Ficai, Denisa; Sonmez, Maria; Radulescu, Marius; Alexie, Mihaela; Ficai, Anton (2015-01-01)
In this review the synthesis, functionalization and some applications of magnetite nanoparticles (MNPs) were highlighted. It is our intention to highlight the correlations between the synthesis routes, related synthesis parameters, functionalization strategies and the properties expected for the materials containing MNPs. The uses of MNPs are strongly influenced by the properties of the materials. Therefore this review is trying to discuss the applications of the magnetite and magnetite based nanomaterials ...
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Guncer, SE; Ferry, DK (1996-04-01)
Light scattering from conduction electrons (or from valence holes) can give information on the time-resolved velocity distribution of nonequilibrium carriers. The experimental approach utilizes, e.g., Raman scattering from the single particles to ascertain the velocity distribution. Calculation of the distribution function through an ensemble Monte Carlo technique allows a comparison between the experiment and theory. Here, this is demonstrated with studies of a GaAs p-i-n structure embedded within cladding...
Citation Formats
A. F. Qasrawi, S. M. S. Elayyat, and N. Hasanlı, “Dynamical and passive characteristics of the Ag/TlGaSeS/Ag RF resonators,” CRYSTAL RESEARCH AND TECHNOLOGY, pp. 615–619, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43167.