Single-Grain Bulk YBa{sub 2}Cu{sub 3}O{sub y} Superconductor Grown in Shorter Duration by IG Process
- Shibaura Institute of Technology, Superconducting Materials Laboratory (Japan)
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 Y{sub 2}BaCuO{sub 5} (Y-211) secondary phase particle dispersion in Y-123 matrix. This is among the first accounts of superconductivity where a large grain YBa{sub 2}Cu{sub 3}O{sub y} (Y-123) was produced by IG process. Further, by utilizing homemade Y-123 and Y-211, we had prepared YBa{sub 2}Cu{sub 3}O{sub y} 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 (T{sub c}), and critical current density (J{sub c}) at 77 K. Here, we provide temperature dependence of magnetization measurements that indicated a sharp superconducting transition with T{sub c} (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/cm{sup 2} 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.
- OSTI ID:
- 22922943
- Journal Information:
- Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 8 Vol. 32; ISSN 1557-1939
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
COMPARATIVE EVALUATIONS
COPPER OXIDES
CRITICAL CURRENT
DISPERSIONS
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MAGNETIZATION
SCANNING ELECTRON MICROSCOPY
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
TRANSITION TEMPERATURE
YTTRIUM OXIDES