Abstract:
Samples of coated conductors based on RE Ba$_2$Cu$_3$O$_{7-x}$, where RE denotes Y, Gd, Sm, Eu, Dy, have been studied. The superconducting layer was deposited by PLD method on steel substrate with textured layers of YSZ and CeO$_2$. The lower the melting temperature of the corresponding rare-earth element, the higher the rate of formation of the HTS layer. It was found that in a perpendicular magnetic field at nitrogen temperature the critical current increases in the series Y $\to$ Dy $\to$ Gd $\to$ Sm, while at helium temperature this trend is reversed.