Grain boundary misorientations and percolative current paths in high-{ital J}{sub {ital c}} powder-in-tube (Bi,Pb){sub 2}Sr{sub 3}Ca{sub 3}Cu{sub 3}O{sub {ital x}}
- Metals and Ceramics Division, Oak Ridge National Laboratory, P. O. Box 2008, Oak Ridge, Tennessee 37831 (United States)
- Texsem Corporation, Provo, Utah 84601 (United States)
- American Superconductor Corporation, Westborough, Massachusetts 01581 (United States)
Grain orientations and grain boundary misorientations in high-{ital J}{sub {ital c}}, powder-in-tube (PIT) (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub {ital x}} (Bi-2223) were determined using electron backscatter Kikuchi diffraction and x-ray microdiffraction. Data collected from over 113 spatially correlated grains, resulting in 227 grain boundaries, show that over 40% of the boundaries are {Sigma}1 or small angle (less than 15{degree}). In addition, 8% of the boundaries are within the Brandon criterion for CSLs (sigma larger than 1 and less than 50). Grain boundary ``texture maps`` derived from the electron microscope image and orientation data reveal the presence of percolative paths between low energy boundaries.
- Research Organization:
- Oak Ridge National Laboratory
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 45655
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 21 Vol. 66; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Local texture and grain boundary misorientations in high T{sub C} oxide superconductors
Local texture and percolative paths for long-range conduction in high critical current density TlBa[sub 2]Ca[sub 2]Cu[sub 3]O[sub 8+][sub [ital x]] deposits