The resistive transition of (Hg0.85Re0.15)(Ba1−ySry)2Ca2Cu3O8+δ superconducting polycrystals

Crystal Growth and Characterization of the Model High‐Temperature Superconductor HgBa2CuO4+δ

“…[9] An alternative method for preparing precursors involves heating a mixture of BaCO 3 and CuO to temperatures exceeding 1100°C. [15,16] A problem with this approach arises from the slow decomposition of BaCO 3 , even at high temperature, and this method is therefore impractical. In order to improve the homogeneity of the precursor, a third approach, the sol-gel method, was employed by several groups.…”

Effect of Sr-for-Ba isovalent substitution on the local structure, hole distribution and magnetic irreversibility of Cu(Ba,Sr)2YbCu2O6.95(2)

“…[2]. The precision of the coulometric titration method applied was better than ±0.01 with respect to the amount of excess oxygen, z [13,16,19].…”

The Correlation of Miller Indices with the Conductivity Mechanism of Cu-Based High-Tc Superconductor

“…The other attempts concentrated on the preparation condition of the applied method [4]. The last group depends on the partial substation of isovalent atoms [5] [6], and the change the parameter (n > 3) [7] [8] [9]. It was difficult to obtain the single phase of Hg-family ceramic compound because it contains both high phase Hg-1223 and low phase (Hg-1212).…”