Single-Grain Bulk YBa2Cu3Oy Superconductor Grown in Shorter Duration by IG Process

  • M. SushmaEmail author
  • M. Murakami
Original Paper


The top-seeded infiltration growth (IG) process is considered to be an attractive, well-established route compared to melt growth (MG) process due to its successful ability to resolve observed problems in MG process such as pores, shrinkage, and an ununiformed Y2BaCuO5 (Y-211) secondary phase particle dispersion in Y-123 matrix. This is among the first accounts of superconductivity where a large grain YBa2Cu3Oy (Y-123) was produced by IG process. Further, by utilizing homemade Y-123 and Y-211, we had prepared YBa2Cu3Oy samples via Y-123 + liquid (1:1) as a liquid source and had further characterized by utilizing the scanning electron microscopy (SEM), superconducting transition temperature (Tc), and critical current density (Jc) at 77 K. Here, we provide temperature dependence of magnetization measurements that indicated a sharp superconducting transition with Tc (onset) around 92 K. In addition, the critical current density was calculated on the basis of Bean’s model and resulted as 30,000 A/cm2 at 77 K (self-field), H//c-axis. Trapped field experiments had lucidly indicated that single-grain nature with maximum-trapped field of 0.3 T at 77 K and 1 mm above sample surface even samples are produced shorter duration, i.e., 50 h.


Infiltration growth process Superconducting transition temperature Critical current density Trapped magnetic field 



Sushma would like to thank the “10th International Workshop on Processing and Applications of Superconducting (RE) BCO Large Grain Materials (PASREG 2017)” conference organizers for the selection of a paper as oral presentation in Young Investigator Forum.


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Authors and Affiliations

  1. 1.Superconducting Materials LaboratoryShibaura Institute of TechnologyTokyoJapan
  2. 2.Seisen International SchoolTokyoJapan

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