Mateeva J.Staneva A.Martinov B.Blagoev B.Nurgaliev T.2024-07-162024-07-162024-07-162024-07-162019-01-011314-79781314-7471SCOPUS_ID:85076569464https://rlib.uctm.edu/handle/123456789/1264The high-temperature ceramic superconductors and nanomaterials are among the most promising groups of materials that are intensively studied. Graphene is a new material with unique electrical, optical and biological properties. The high mobility of graphene charges implies the possibility of using it as a suitable additive improving the superconductors' physical characteristics. The idea of this study is to synthesize series of bulk composites based on YBCO superconductors, silver and RGO with superconducting properties. The YBCO phase is obtained by a ceramic technology. It includes Ag aiming better sintering. Graphene is synthesized by a modified Hammer's method. XRD is applied to verify the obtaining of the starting phases. The synthesized composites are characterized by XRD, SEM and EDX analysis. All composites prepared are superconductive and have a Meissner effect.enArticle