Structural variations in high-temperature superconductive YBa2Cu3O7−δ ceramic samples under high pressure-high temperature conditions

Structural variations in YBa2Cu3O7−δ samples treated under high pressure as a function of the technological parameters of the process (pressure, temperature, time and material with which the samples were in contact), oxygen content of the structure, and dimensions of twinning domains of the starting samples, have been investigated.