Superconductivity and microstructure of epitaxial (Tl,Bi)Sr{sub 1.6}Ba{0.4}Ca{sub 2}Cu{sub 3}O{sub 9-delta} thin films.
Epitaxial (Tl,Bi)Sr{sub 1.6}Ba{sub 0.4}Ca{sub 2}Cu{sub 3}O{sub 9-{delta}} ((Tl,Bi)-1223) thin films on (100) single crystal LaAlO{sub 3} substrates were successfully synthesized by a two-step procedure. The (Tl,Bi)-1223 phase development in both air and argon was systematically investigated by X-ray diffraction. The microstructure and epitaxial relationship between films and substrates were measured by X-ray {phi} scan, transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The DC resistance versus temperature transition, zero-field-cooled (ZFC) and field-cooled (FC) magnetization transition, hysteresis curve, and transport critical current density were measured. The zero-resistance transition temperature was 107 K, and the critical current density at 77 K and zero field was higher than 2 x 10{sup 6} A/cm2. (Tl,Bi)-1223 films have good flux-pinning properties as shown by the slow decrease of the critical current density in an external magnetic field.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- ER
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 937851
- Report Number(s):
- ANL/MSD/JA-21975
- Journal Information:
- Physica C, Journal Name: Physica C Journal Issue: 1995 Vol. 245; ISSN 0921-4534; ISSN PHYCE6
- Country of Publication:
- United States
- Language:
- ENGLISH
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