In this study we prepared YxYb1-xBa2Cu3O7-δ (x = 0.1, 0.2, 0.3, 0.4, 0.5) powders and bulks to use as intermedium for superconducting joint between REBCO-coated conductors. Superconducting joints are essential in the development of high-field REBCO persistent magnets. All were sintered at 850 °C 10 hours air. Bulks by pressing 70 MPa. Calcination was performed under same conditions powders. Two...