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Information × Registration Number 0215U003257, 0114U002945 , R & D reports Title Dielectrometry of diamond-like materials at gigahertz and terahertz frequencies of electromagnetic waves and wide temperature range popup.stage_title Head Derkach Vadym Nikolajevich, Registration Date 22-01-2015 Organization O.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine popup.description2 The Subject of research is the phenomena and processes of absorption of electromagnetic radiation of millimeter-wave in a solid at low temperatures. Purpose is an experimental studies of dielectric losses in diamonds and diamond-like materials such as CVD-diamond, silicon doped with gold (Si: Au), ultra-pure single crystals of silicon carbide (SіS), at a wide range of gigahertz frequencies and temperatures to identify the relative contributions of different components of dielectric losses, especially those related to defects, impurities and non-diamond inclusions. Used equipment is the developed by the authors of the original measuring stands for studying resonant processes in open resonators and a low-temperature radio spectrometer with a resonance cell in the form of disk dielectric resonator on whispering gallery modes, which is made of a material under testing. Accordingly to the work plan of the first year following has been done. Low-temperature millimeter wave radiospectrometer for measuring the dielectric parameters of substances in the frequency range up to 280 GHz and a temperature of 1.0 - 300K was modernized. The gas distribution stand was made, in particular, and PC-controlled oscillator to 140 GHz and temperature measurement unit were designed and manufactured. The reference samples were manufactured and conducted their investigation and calibration of measuring devices. A measurement of the dielectric characteristics of weakly absorbing materials, including diamond-like materials (CVD diamond, Si: Au) in the temperature range 1.0 - 300K were carried out. Based on these results an attempt to establish the basic physical mechanisms responsible for the dielectric losses in such materials was made. Two report at international conferences on the results of the work done. Product Description popup.authors Головащенко Р.В. Корж В.Г. Нахимович М.І. Острижний Е.М. Рибалко О.С. Тарапов С.І. popup.nrat_date 2020-04-02 Close