Adrian Crisan (INCD Fizica Materialelor Bucuresti, si Universitatea Birmingham) este Invited Speaker cu prezentarea "Nanoengineered pinning centres in thick superconducting films"

A typical facility for fabrication of devices based on high temperature superconducting (HTS) films grown on the less-expensive CeO2-buffered sapphire substrates comprises a transfer chamber, a chamber for CeO2 growth, a chamber for YBa2Cu3Oy (YBCO) growth, and a chamber for Au deposition at room temperature. Here we present the adaptation of our previously-reported method to create artificial pinning centres in HTS films through self-assembled nano-scale

Artificial pinning centres produced by Gd2Ba4CuWOy (Gd2411W) nano-phase inclusions in YBa2Cu3Oy (YBCO) thin films grown by pulsed laser deposition (PLD) using an YBCO target containing 1% mol Gd2411W have been investigated. For comparison, YBCO thin films have been grown under the same conditions using a pure (commercial) YBCO target. The resulting films were characterised by ac susceptibility (superconducting transition), SQUID magnetometer (critical