Effects of Y substitution on the temperature and field dependence of magnetic hystereses in YxGd1−xBa2Cu3O7−δ

Superconducting properties of zinc substitution in Tl-2223 phase

“…The data, in this figure, indicate that the normal-state resistivity increases almost linearly with increasing the Zn-content from 0 to 0.3, and then it rapidly increases at x > 0.3. This increase is an indication of the disorder of cations and oxygen vacancies and it is induced by increasing the number of scattering centers [18]. 6 shows the variation of the superconducting transition temperature T c with the Zn-content for Tl 2 Ba 2 Ca 2 Cu 3−x Zn x O 10−δ .…”

Structural Phase of Y358 Superconductor Comparison with Y123

“…There is another factor favoring structure "A." It is known that mass anisotropy around superconducting planes leads to an increase in T C of YBCO compounds [17]. It is evident that such mass anisotropy in structure "A" is larger than in structure "S."…”

Dependency of c-lattice parameter, activation energy and its magnetic power constant on x in Y1−xYbx/2Gdx/2Ba2Cu3O7−y superconductors

“…Because of the fact that an ionic radius of Y atom is smaller than that of Gd and also bigger than that of 0925 Yb, when Gd and Yb atoms are substituted together in Y123 structure at the same ratio of x/2, the effects of three different atoms to change c-lattice parameter, activation energy and its magnetic power constant were investigated. Although numerous studies have been undertaken on Yb123 [11], (Yb,Gd)123 [7,8,12,13], and Gd123 [6,14], no studies on the effect of x on the activation energy of such Y 1−x Yb x/2 Gd x/2 Ba 2 Cu 3 O 7−y polycrystalline samples have been reported.…”