Tape casting and partial melting of Bi-2212 thick films
To produce Bi-2212 thick films with high critical current densities tape casting and partial melting is a promising fabrication method. Bi-2212 powder and organic additives were mixed into a slurry and tape casted onto glass by the doctor blade tape casting process. The films were cut from the green tape and partially molten on Ag foils during heat treatment. The authors obtained almost single-phase and well-textured films over the whole thickness of 20 microns. The orientation of the (a,b)-plane of the grains was parallel to the substrate with a misalignment of less than 6 deg. At 77 K/0T a critical current density of 15,000 A/sq cm was reached in films of the dimension 1 cm x 2 cm x 20 microns (1 micron V/cm criterion, resistively measured). At 4 K/0T the highest value was 350,000 A/sq cm (1 nV/cm criterion, magnetically measured).
- Research Organization:
- Argonne National Lab., IL (United States)
- OSTI ID:
- 135394
- Report Number(s):
- N--96-10272; NASA-CP--3290-VOL-2; S--792-VOL-2; NAS--1.55:3290-VOL-2; CONF-940627--
- Country of Publication:
- United States
- Language:
- English
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