Abstract
Structural characterization of high temperature superconducting YBa2Cu3O7-x compounds have been made by transmission electron microscopy imaging and diffraction techniques. As a consequence of the tetragonal to orthorhombic transformation, twins form with {110} twin planes and with varying twin boundary spacings. Microdiffraction analysis at the 10 nm scale indicates local variations of Δa/a, where Δa is the difference between a and b directions of the orthorhombic phase. These studies indicate a spatial variation in the orthorhombicity in a single grain and, hence, nonhomogeneous distribution of regions with insulating character. The effects of these variations on the superconductivity are discussed.
Original language | English (US) |
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Pages (from-to) | 60-68 |
Number of pages | 9 |
Journal | International SAMPE Symposium and Exhibition (Proceedings) |
Volume | 2 |
State | Published - 1988 |
Event | 2nd International SAMPE Electronics Conference - Electronic Materials and Processes - Seattle, WA, USA Duration: Jun 14 1988 → Jun 16 1988 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering