Detection and establishment of the nature of the anomalous x-ray optical effect in two-layer systems of the type “substrate–coating”
V.A. Finkel, T.V. Sukhareva, and M.S. Sungurov
National Science Center, Kharkov Institute of Physics and Technology 1 Akademicheskaya Str., Kharkiv 61108, Ukraine
Received December 16, 2019, published online April 24, 2020
An anomalous x-ray optical effect was detected in the Ni(1–x)Wx/TiN system, which consists in increasing the intensity of certain diffraction lines of the substrate with an increase in the coating thickness. Based on the discovered effect, ideas are developped on optimizing the architecture of two-layer systems of the type “sub-strate of paramagnetic NiW alloys with a TiN coating”, which increase in the current-carrying capacity of high-temperature second-generation 2G HTS superconductors.
Key words: multilayer high-temperature superconductors, high-temperature superconductors of the second generation 2G HTS, anomalous x-ray optical effect, Ni–W alloys, titanium nitride.