Preparation of High Jc Bi-Sr-Ca-Cu-O Bulk Sample by Floating Zone Method
Abstract
Bi-Sr-Ca-Cu-O bulk samples with three different nominal compositions of Bi2Sr2CaCu2Oy, Bi2Sr2Ca2Cu3Oy and Bi0.7Pb0.3SrCaCu1.8Oy were prepared by the floating zone method at growth rates ranging from 2 mm/h to 70 mm/h. The sample grown at 2 mm/h with the nominal composition of Bi2Sr2CaCu2Oy possessed high density, highly aligned morphology, and a transport critical current density higher than 1490 A/cm2 at 77 K under a zero magnetic field without any postannealing.
- Publication:
-
Japanese Journal of Applied Physics
- Pub Date:
- April 1989
- DOI:
- 10.1143/JJAP.28.L606
- Bibcode:
- 1989JaJAP..28L.606K
- Keywords:
-
- Bismuth Oxides;
- Copper Oxides;
- Crystal Structure;
- Current Density;
- Float Zones;
- High Temperature Superconductors;
- Calcium Oxides;
- Crystal Growth;
- Lead Oxides;
- Strontium Compounds;
- Solid-State Physics