Author(s)

Made Sumadiyasa, Nyoman Wendri, Putu Suardana, Ni Nyoman Rupiasih

Department of Physics, Faculty of Mathematics and Natural Sciences, Udayana University, Badung, Indonesia.

In an effort to improve the performance of superconductors in the field and high temperatures it is important to study the superconducting mechanism. For this reason, the cation substitution can be conducted. One of the high Tc superconductors Gd₁Ba₂Cu₃O_7−δ phase with Sr substitution has been synthesized, i.e. Gd₁(Ba_2−xSr_x)Cu₃O_7−δ compound. The sample was synthesized by using a solid-state reaction method with a wet mixing, sintered for 12 hours at temperature 900°C. The synthesis results are characterized by using XRD. The results of Match-3 software analysis showed high (higher 85%) Gd₁Ba₂Cu₃O_7−δ phase was formed. The Sr substitution causes changes to the structure, i.e. the lattice parameters a, b and c, where the orthorhombicity tends to decrease with increasing Sr content. Refinement results show that based on the oxygen occupancy, the total oxygen content tends to increase.

Wet Mixing, Gd₁(Ba_2−xSr_x)Cu₃O_7−δ Compound, Sr Substitution, Lattice Parameters, Orthorhombicity

Sumadiyasa, M. , Wendri, N. , Suardana, P. and Rupiasih, N. (2020) Effect of Substitution Sr Cations on the Structure in the Gd₁(Ba_2−xSr_x)Cu₃O_7−δ Phases. Journal of Materials Science and Chemical Engineering, 8, 44-53. doi: 10.4236/msce.2020.81005.