High TC superconductor polymer composite based on YBa2Cu3O7x. II. Conduction mechanisms and temperature effect on conductive and dielectric properties of polypropylene composites

1995 ◽  
Vol 57 (4) ◽  
pp. 431-437 ◽  
Author(s):  
José Luis Acosta ◽  
José Ramón Jurado
Keyword(s):  
Dielectric Properties ◽  
Temperature Effect ◽  
Polymer Composite ◽  
High Tc ◽  
Polypropylene Composites ◽  
High Tc Superconductor ◽  
Conduction Mechanisms

Effects of La-doping on crystallinity and dielectric properties of SrAl0.5Ta0.5O3 thin films for high-Tc superconductor multilayer structure

2003 ◽  
Vol 392-396 ◽  
pp. 1337-1341
Author(s):  
Yoshihiro Takahashi ◽  
Hironori Wakana ◽  
Akihiro Ogawa ◽  
Tadataka Morishita ◽  
Keiichi Tanabe
Keyword(s):  
Thin Films ◽  
Dielectric Properties ◽  
Multilayer Structure ◽  
High Tc ◽  
La Doping ◽  
High Tc Superconductor

High resolution STEM imaging study on high Tc superconductor YBa2CuaO7-x

1988 ◽  
Vol 46 ◽  
pp. 882-883
Author(s):  
H.-J. Ou ◽  
J. M. Cowley
Keyword(s):  
Crystal Structure ◽  
High Resolution ◽  
Grain Boundary ◽  
Strong Field ◽  
Imaging Study ◽  
Structure Defects ◽  
High Tc ◽  
High Tc Superconductor ◽  
Diffraction Patterns ◽  
Lattice Planes

Using the dedicate VG-HB5 STEM microscope, the crystal structure of high Tc superconductor of YBa2Cu3O7-x has been studied via high resolution STEM (HRSTEM) imaging and nanobeam (∽3A) diffraction patterns. Figure 1(a) and 2(a) illustrate the HRSTEM image taken at 10' times magnification along [001] direction and [100] direction, respectively. In figure 1(a), a grain boundary with strong field contrast is seen between two crystal regions A and B. The grain boundary appears to be parallel to a (110) plane, although it is not possible to determine [100] and [001] axes as it is in other regions which contain twin planes [3]. Following the horizontal lattice lines, from left to right across the grain boundary, a lattice bending of ∽4° is noticed. Three extra lattice planes, indicated by arrows, were found to terminate at the grain boundary and form dislocations. It is believed that due to different chemical composition, such structure defects occur during crystal growth. No bending is observed along the vertical lattice lines.

Electron-Probe Quantitative Energy-Dispersive Analysis of Trace Magnesium Concentrations in Ag-Mg Alloys

1996 ◽  
Vol 54 ◽  
pp. 510-511
Author(s):  
R. B. Marinenko
Keyword(s):  
Electron Probe ◽  
Energy Dispersive Spectrometry ◽  
Mg Alloys ◽  
Energy Dispersive ◽  
Energy Dispersive Analysis ◽  
High Tc ◽  
Alloy Wire ◽  
High Tc Superconductor ◽  
Eds Analysis ◽  
Superior Mechanical Properties

Internally oxidized Ag-Mg alloys are used as sheaths for high Tc superconductor wires because of their superior mechanical properties. The preparation and characteristics of these materials have been reported. Performance of the sheaths depends on the concentration of the magnesium which generally is less than 0.5 wt. percent. The purpose of this work was to determine whether electron probe microanalysis using energy dispersive spectrometry (EDS) could be used to quantitate three different Ag-Mg alloys. Quantitative EDS analysis can be difficult because the AgL escape peak occurs at the same energy (1.25 keV) as the Mg Kα peak. An EDS spectrum of a Ag-Mg alloy wire is compared to a pure Ag spectrum in Fig. 1.

Evidence for magnetic organization of high Tc superconductor YBa 2 Cu8O7 observed by neutron diffraction

1987 ◽  
Vol 48 (10) ◽  
pp. 1623-1625 ◽  
Author(s):  
B. Farnoux ◽  
R. Kahn ◽  
A. Brulet ◽  
G. Collin ◽  
J.P. Pouget
Keyword(s):  
Neutron Diffraction ◽  
High Tc ◽  
High Tc Superconductor

Synthesis of One-dimensional Nano-sized Defects in High Tc Superconductor

2006 ◽  
Author(s):  
In-Gann Chen ◽  
Maw-Kuen Wu ◽  
Shih-Yun Chen
Keyword(s):  
High Tc ◽  
One Dimensional ◽  
High Tc Superconductor

DIELECTRIC PROPERTIES OF INDUSTRIAL POLYMER COMPOSITE MATERIALS

2010 ◽  
Vol 13 (1) ◽  
pp. 73-77 ◽  
Author(s):  
Nadia A. Ali ◽  
◽  
Farah T. Mohammed Noori ◽  
Sinaa I. Hussin ◽  
◽  
...  
Keyword(s):  
Composite Materials ◽  
Dielectric Properties ◽  
Polymer Composite ◽  
Polymer Composite Materials
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