IJSR - International Journal of Scientific Research

IBA Paramarta; IGAA Ratnawati; IK. Putra; WG Suharta

Volume : VII, Issue : II, February - 2018

Influence of Substitution of Gd on Ca Elements in Phase 2212 Superconductor: Bi2Sr2(GdxCa1–x)Cu2Oz

Iba Paramarta, Igaa Ratnawati, Ik. Putra, Wg Suharta

Abstract :

In this research, the influence of substitution of Gd on Ca on Bismuth superconductor phase 2212 has been successful. The synthesis process is done by using wet–mixing method. The synthesis follows the steps: weighing, mixing with HNO₃, calcination and sintering. Characterization is done with X–ray radiation (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Scanning electron microscope (SEM). The XRD results show a spectrum dominated by high–intensity Bi₂Sr₂(Gd_xCa_1–x)Cu₂O_z occurrences and phase impurities of 2201 (Bi₂Sr₂CuO_x) and phase 21 (Ca₂CuO₃) with little intensity. The addition of the Gd element causes a change of the lattice parameter, so that the unit cell volume becomes larger. In contrast, the addition of the Gd element causes the atomic density in the unit cell to become smaller. The SEM characterization results show rod shaped with particles of size from 30 to 101 nm. The FTIR characterization results show the wave absorption at the wave number of 439.77, 632.65, 954.76, 1145.72, 1269.16, 1716.65, 3001.24, 3714.90 and 3844.13 cm^–1. These wave numbers are related to bending viation absorption of CO₃^2–, viation M–O and stretching C–H.