| 1. |
- Bryantseva, T. A., et al.
(författare)
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Peculiarities of the Formation and Growth of Thin Gold Films on the Surface of Gallium Arsenide during Thermal Evaporation in Vacuum
- 2023
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Ingår i: Journal of communications technology & electronics. - : Pleiades Publishing Ltd. - 1064-2269 .- 1555-6557. ; 68:5, s. 566-574
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Tidskriftsartikel (refereegranskat)abstract
- Changes in the morphology and structure of the GaAs surface during the deposition of an Au film by thermal evaporation in vacuum have been studied. It has been found that the deposition of an Au film with the participation of a flow of particles and light from a heated evaporator causes the appearance of photo effects in the near-surface GaAs layers, including light diffraction on surface acoustic waves, the growth of whiskers, and electron emission, which leads to the formation of microcracks on the GaAs surface and the growth of GaAs crystallites. It is shown that the structure and composition of the film boundaries of Au and GaAs surfaces depend on the electron concentration in gallium arsenide, which ultimately determines the properties of the electrophysical parameters of the Au-GaAs contacts.
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| 2. |
- Lyubchenko, V. E., et al.
(författare)
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Microstrip Antenna–Oscillators Integrated with a Waveguide Built in a Dielectric Substrate
- 2018
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Ingår i: Journal of communications technology & electronics. - : Pleiades Publishing. - 1064-2269 .- 1555-6557. ; 63:9, s. 1059-1063
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Tidskriftsartikel (refereegranskat)abstract
- The design of a microwave oscillator based on a microstrip log-periodic antenna integrated with a field effect transistor and a waveguide built in a dielectric substrate has been developed and analyzed. The waveguide geometry provides the possibility of propagation and radiation at both the fundamental frequency of the log-periodic antenna and harmonics. Computer simulation of the oscillator design in a frequency range near resonance frequencies of the log-periodic antenna is conducted. The possibility of summation of powers of several antenna–oscillators arranged ias a linear phased array is investigated.
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| 3. |
- Vilkov, E. A., et al.
(författare)
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Frequency tuning of the spin-injection radiation in the magnetic contact junction
- 2016
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Ingår i: Journal of communications technology & electronics. - : Maik Nauka/Interperiodica. - 1064-2269 .- 1555-6557. ; 61:9, s. 995-1002
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Tidskriftsartikel (refereegranskat)abstract
- The frequency tuning of the terahertz radiation of spin-injection oscillator based on magnetic contact junction that is formed by contacting ferromagnetic metal layers with different magnetizations is analyzed. Under the current-induced spin injection from one magnetic layer (injector) to another (working) layer, the interval of radiation frequencies is determined by the current density in the magnetic contact, the mismatch angle of the magnetizations of injector and working layer, and the equilibrium spin polarization. The wide-range tuning of terahertz frequencies of the spin-injection radiation can be implemented using variations in the above parameters.
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