V. Pop et al., MAGNETIC-PROPERTIES OF YBA2(CU(1-X)M(X))(3)O-7-DELTA (M=CR, NI, ZN AND AL) SUPERCONDUCTING MATERIALS, Journal of magnetism and magnetic materials, 144, 1995, pp. 1307-1308
Magnetic measurements were performed on YBa2(Cu(1-x)M(x))O-7-delta sys
tem with M = Cr, Ni, Zn and Al in the temperature range 4-400 K and fi
elds up to 70 kOe. The hysteresis loops as well as the magnetic behavi
our above the superconducting transition temperatures are discussed in
correlation with superconducting properties.