title: High-resolution electron microscopy of high-temperature superconductors.
abstract: We review recent results obtained at Northwestern using high-resolution electron microscopy to study high-temperature superconductors. While in general these materials form large, very perfect single crystal grains which display very few imperfections, there is also evidence of slip defects, amorphous regions, and order-disorder transformations. We also report that the gadolinium-based superconductors and in one case yttrium-based superconductors show evidence for some copper solid solubility in the form of copper-rich planar defects. The structure of a metastable trigonal polytype is also reported, as are the effects of electron beam and water vapor damage to the materials.
authors.affiliation: Materials Research Center, Northwestern University, Evanston, Illinois 60208.
authors.forename: L D
authors.initials: LD
authors.lastname: Marks
authors.forename: D J
authors.initials: DJ
authors.lastname: Li
authors.forename: H
authors.initials: H
authors.lastname: Shibahara
authors.forename: J P
authors.initials: JP
authors.lastname: Zhang
mesh_terms: D003461:Crystallography; D004553:Electric Conductivity; D006358:Hot Temperature; D008670:Metals / Q000032:analysis; D008854:Microscopy, Electron / Q000379:methods*
chemical_list: D008670:Metals