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Title: Acoustic plane wave preferential orientation of metal oxide superconducting materials

Abstract

A polycrystalline metal oxide such as YBa.sub.2 Cu.sub.3 O.sub.7-X (where 0<0.5) exhibits superconducting properties and is capable of conducting very large current densities. By aligning the two-dimensional Cu-O layers which carry the current in the superconducting state in the a- and b-directions, i.e., within the basal plane, a high degree of crystalline axes alignment is provided between adjacent grains permitting the conduction of high current densities. With the superconducting metal oxide in the form of a ceramic slip which has not yet set, orientation of the crystal basal planes parallel with the direction of desired current flow is accomplished by an applied acoustic plane wave in the acoustic or ultrasonic frequency range (either progressive or standing) in applying a torque to each crystal particle. The ceramic slip is then set and fired by conventional methods to produce a conductor with preferentially oriented grains and substantially enhanced current carrying capacity.

Inventors:
 [1];  [2]
  1. North Olmsted, OH
  2. Glen Ellyn, IL
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
867969
Patent Number(s):
5045528
Assignee:
ARCH Development Corporation (Argonne, IL)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
acoustic; plane; wave; preferential; orientation; metal; oxide; superconducting; materials; polycrystalline; yba; cu; 7-x; exhibits; properties; capable; conducting; current; densities; aligning; two-dimensional; cu-o; layers; carry; a-; b-directions; basal; degree; crystalline; axes; alignment; provided; adjacent; grains; permitting; conduction; form; ceramic; slip; set; crystal; planes; parallel; direction; desired; flow; accomplished; applied; ultrasonic; frequency; range; progressive; standing; applying; torque; particle; fired; conventional; methods; produce; conductor; preferentially; oriented; substantially; enhanced; carrying; capacity; polycrystalline metal; adjacent grains; plane wave; preferential orientation; substantially enhanced; superconducting properties; current densities; current carrying; conducting material; conventional methods; oxide superconducting; metal oxide; current flow; superconducting material; frequency range; superconducting materials; ultrasonic frequency; two-dimensional cu-o; carrying capacity; enhanced current; crystalline axes; grains permitting; basal plane; axes alignment; exhibits superconducting; cu-o layers; superconducting metal; preferentially oriented; conducting metal; /505/264/

Citation Formats

Tolt, Thomas L, and Poeppel, Roger B. Acoustic plane wave preferential orientation of metal oxide superconducting materials. United States: N. p., 1991. Web.
Tolt, Thomas L, & Poeppel, Roger B. Acoustic plane wave preferential orientation of metal oxide superconducting materials. United States.
Tolt, Thomas L, and Poeppel, Roger B. Tue . "Acoustic plane wave preferential orientation of metal oxide superconducting materials". United States. https://www.osti.gov/servlets/purl/867969.
@article{osti_867969,
title = {Acoustic plane wave preferential orientation of metal oxide superconducting materials},
author = {Tolt, Thomas L and Poeppel, Roger B},
abstractNote = {A polycrystalline metal oxide such as YBa.sub.2 Cu.sub.3 O.sub.7-X (where 0<0.5) exhibits superconducting properties and is capable of conducting very large current densities. By aligning the two-dimensional Cu-O layers which carry the current in the superconducting state in the a- and b-directions, i.e., within the basal plane, a high degree of crystalline axes alignment is provided between adjacent grains permitting the conduction of high current densities. With the superconducting metal oxide in the form of a ceramic slip which has not yet set, orientation of the crystal basal planes parallel with the direction of desired current flow is accomplished by an applied acoustic plane wave in the acoustic or ultrasonic frequency range (either progressive or standing) in applying a torque to each crystal particle. The ceramic slip is then set and fired by conventional methods to produce a conductor with preferentially oriented grains and substantially enhanced current carrying capacity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

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