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Title: Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals

Abstract

A method of fabricating bulk YBa.sub.2 Cu.sub.3 O.sub.x where compressed powder oxides and/or carbonates of Y and Ba and Cu present in mole ratios to form YBa.sub.2 Cu.sub.3 O.sub.x are heated in the presence of a Nd.sub.1+x Ba.sub.2-x Cu.sub.3 O.sub.y seed crystal to a temperature sufficient to form a liquid phase in the YBa.sub.2 Cu.sub.3 O.sub.x while maintaining the seed crystal solid. The materials are slowly cooled to provide a YBa.sub.2 Cu.sub.3 O.sub.x material having a predetermined number of domains between 1 and 5. Crack-free single domain materials can be formed using either plate shaped seed crystals or cube shaped seed crystals with a pedestal of preferential orientation material.

Inventors:
 [1];  [2];  [3];  [4]
  1. (Lemont, IL)
  2. (Darien, IL)
  3. (Oak Park, OH)
  4. (Columbus, OH)
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
871685
Patent Number(s):
5776864
Assignee:
University of Chicago (Chicago, IL) ANL
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
single; domain; 123; material; produced; seeding; crystal; rare; earth; barium; copper; oxide; crystals; method; fabricating; bulk; yba; cu; compressed; powder; oxides; carbonates; mole; ratios; form; heated; presence; 2-x; seed; temperature; sufficient; liquid; phase; maintaining; solid; materials; slowly; cooled; provide; predetermined; domains; crack-free; formed; plate; shaped; cube; pedestal; preferential; orientation; seed crystals; material produced; seed crystal; preferential orientation; copper oxide; liquid phase; rare earth; single crystal; temperature sufficient; single crystals; mole ratio; single domain; barium copper; powder oxides; oxide single; mole ratios; compressed powder; fabricating bulk; earth barium; /505/23/252/423/

Citation Formats

Todt, Volker, Miller, Dean J., Shi, Donglu, and Sengupta, Suvankar. Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals. United States: N. p., 1998. Web.
Todt, Volker, Miller, Dean J., Shi, Donglu, & Sengupta, Suvankar. Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals. United States.
Todt, Volker, Miller, Dean J., Shi, Donglu, and Sengupta, Suvankar. Thu . "Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals". United States. https://www.osti.gov/servlets/purl/871685.
@article{osti_871685,
title = {Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals},
author = {Todt, Volker and Miller, Dean J. and Shi, Donglu and Sengupta, Suvankar},
abstractNote = {A method of fabricating bulk YBa.sub.2 Cu.sub.3 O.sub.x where compressed powder oxides and/or carbonates of Y and Ba and Cu present in mole ratios to form YBa.sub.2 Cu.sub.3 O.sub.x are heated in the presence of a Nd.sub.1+x Ba.sub.2-x Cu.sub.3 O.sub.y seed crystal to a temperature sufficient to form a liquid phase in the YBa.sub.2 Cu.sub.3 O.sub.x while maintaining the seed crystal solid. The materials are slowly cooled to provide a YBa.sub.2 Cu.sub.3 O.sub.x material having a predetermined number of domains between 1 and 5. Crack-free single domain materials can be formed using either plate shaped seed crystals or cube shaped seed crystals with a pedestal of preferential orientation material.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

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