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}}

Journal Article · Mon May 22 00:00:00 EDT 1995 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.113468· OSTI ID:45655

Goyal, A; Specht, E D; Kroeger, D M ^[1]; Mason, T A; Dingley, D J ^[2]; Riley, Jr, G N; Rupich, M W ^[3]

---

1. Metals and Ceramics Division, Oak Ridge National Laboratory, P. O. Box 2008, Oak Ridge, Tennessee 37831 (United States)
2. Texsem Corporation, Provo, Utah 84601 (United States)
3. 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 Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 45655
• Journal Information: Applied Physics Letters, Vol. 66, Issue 21; Other Information: PBD: 22 May 1995
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
36 MATERIALS SCIENCE
BISMUTH OXIDES
GRAIN BOUNDARIES
LEAD OXIDES
STRONTIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
SUPERCONDUCTING CABLES
MICROSTRUCTURE
X-RAY DIFFRACTION
ELECTRON DIFFRACTION
TEXTURE
CRITICAL CURRENT