The article presents a study of the transport properties of high-temperature superconducting compounds of the Y-Ba-Cu-O system with the addition of the carbon nanomaterial (carbon nanotubes) "Taunite" in different concentrations. According to the data of X-ray phase analysis, scanning electron microscopy and magnetic measurements, it was determined that the carbon nanotube "Taunite" contains ferro-and superparamagnetic particles (~ 30 nm). The dependences of the resistance of the samples on the temperature have been constructed, and the temperature of the transition of the samples to the superconducting state (~ 90 K) has been determined, and the features ("stages") on the resistance curves are observed below. Nickel nanoparticles in the carbon nanotubes "Taunite" have been established to not affect the critical temperature of the superconducting transition, yet after reaching a certain concentration, they destroy the superconducting state.

This paper discusses the results of structural and magnetic measurements of Zn 1−x Li x O y thin films (x = 0-0.06) synthesized by the PLD method under various conditions, as well as the results of analysis of the electronic state of atoms. It was discovered that all Zn 1−x Li x O y thin films contain a single ZnO phase with a wurzite structure (P6 3 /mc) oriented along the c-direction. Thickness (90-117 nm) and roughness (2-7 nm) of the synthesized films were determined. A high-temperature ferromagnetism was detected in Zn 1-x Li x O y thin films (x = 0.02-0.06); it increased upon the increase in lithium concentration. Interstitial lithium atoms (Li i ) were assumed to play a special role in its occurrence.