Z-contrast transmission electron microscopy

SJ Pennycook - Annual review of materials science, 1992 - inis.iaea.org
[en] Z-contrast electron microscopy provides a new view of materials on the atomic scale, a
direct image of atomic structure composition. Unexpected atomic arrangement generally …

Chemically sensitive structure-imaging with a scanning transmission electron microscope

SJ Pennycook, LA Boatner - Nature, 1988 - nature.com
Conventional high-resolution electron microscopy uses the phase-contrast method1, in
which the diffracted beams emerging from the sample are recombined on the viewing …

Bulk synthesis of the 81-K superconductor YBa2Cu4O8 at high oxygen pressure

J Karpinski, E Kaldis, E Jilek, S Rusiecki, B Bucher - Nature, 1988 - nature.com
Abstract The superconducting phase YBa2Cu4O8 ('124') differs from YBa2Cu3O7 ('123') in
having a double, instead of single, Cu–O chain running parallel to the b axis. It was first …

Growth Mechanism of Sputtered Films of YBa2Cu3O7 Studied by Scanning Tunneling Microscopy

M Hawley, ID Raistrick, JG Beery, RJ Houlton - Science, 1991 - science.org
The surface microstructures of c-axis-oriented films of YBa2Cu3O7, deposited by off-axis
magnetron sputtering on MgO and SrTiO3 single crystal (100) substrates, have been …

Chemistry of high-temperature superconductors

AW Sleight - Science, 1988 - science.org
Spectacular advances in superconductors have taken place in the past two years. The upper
temperature for superconductivity has risen from 23 K to 122 K, and there is reason to …

Effect of oxygen pressure on the synthesis of YBa2Cu3O7−x thin films by post‐deposition annealing

R Feenstra, TB Lindemer, JD Budai… - Journal of Applied …, 1991 - pubs.aip.org
The effect of ambient oxygen pressure on the synthesis of epitaxial YBa2Cu3O7− x films on
(100) SrTiO3 substrates by post‐deposition annealing of amorphous precursor films was …

Progress in Nanoengineered Microstructures for Tunable High‐Current, High‐Temperature Superconducting Wires

TG Holesinger, L Civale, B Maiorov… - Advanced …, 2008 - Wiley Online Library
High critical current densities (Jc) in thick films of the Y1Ba2Cu3O7–δ (YBCO, Tc≈ 92 K)
superconductor directly depend upon the types of nanoscale defects and their densities …

Thermodynamic considerations in superconducting oxides

R Beyers, BT Ahn - Annual review of materials science, 1991 - inis.iaea.org
[en] The basic science that underlies processing can be divided into two main areas---
thermodynamics and kinetics---which can be further subdivided into phase stability, solid …

Eight new high-temperature superconductors with the 1: 2: 4 structure

DE Morris, JH Nickel, JYT Wei, NG Asmar, JS Scott… - Physical Review B, 1989 - APS
New high-temperature superconducting compounds R Ba 2 Cu 4 O 8 (R= Nd, Sm, Eu, Gd,
Dy, Ho, Er, and Tm) which share the 1: 2: 4 structure of YBa 2 Cu 4 O 8 are bulk synthesized …

Synthesis of bulk superconducting YBa2Cu4O8 at one atmosphere oxygen pressure

RJ Cava, JJ Krajewski, WF Peck Jr, B Batlogg… - Nature, 1989 - nature.com
THE well-known 90-K superconductor Y2Ba2Cu3O7 ('123') is the first (n= 0) member of a
homologous series of compounds with the general formula Y2Ba4Cu6+ n O14+ n. These …