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A Process for Producing “Granular Single Crystals” of Ceramics from Polycrystals by Biaxial Alignment, Demonstrated for High-Tc Superconductors

Published online by Cambridge University Press:  25 February 2011

Rafael Hidalgo ,
Xin-Yu Zhanl ,
Sheng-Qi Wang ,
Baoshan Zhang ,
Jian-Zhong Zhang ,
Feng Chen ,
C. Finn ,
Robert S. Markiewicz  and
Bill C. Giessen
Rafael Hidalgo
Affiliation:
Northeastern University, Dept. of Chemistry and Barnett Institute Materials Science Division), Boston, MA 02115
Xin-Yu Zhanl
Affiliation:
Northeastern University, Dept. of Chemistry and Barnett Institute Materials Science Division), Boston, MA 02115
Sheng-Qi Wang
Affiliation:
Northeastern University, Dept. of Chemistry and Barnett Institute Materials Science Division), Boston, MA 02115
Baoshan Zhang
Affiliation:
Northeastern University, Dept. of Physics and Barnett Institute (Materials Science Division), Boston, MA 02115
Jian-Zhong Zhang
Affiliation:
Northeastern University, Dept. of Physics and Barnett Institute (Materials Science Division), Boston, MA 02115
Feng Chen
Affiliation:
Rider College, Dept. of Chemistry, Lawrenceville, NJ 08648
C. Finn
Affiliation:
Northeastern University, Dept. of Mechanical Engineering, Boston, MA 02115
Robert S. Markiewicz
Affiliation:
Northeastern University, Dept. of Chemistry and Barnett Institute Materials Science Division), Boston, MA 02115
Bill C. Giessen
Affiliation:
Northeastern University, Dept. of Chemistry and Barnett Institute Materials Science Division), Boston, MA 02115
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Abstract

A recently developed method for producing triaxial alignment of single crystalline grains may be applicable to ceramics other than the high-Tc cuprate superconductors for which it was designed as a means of reducing the grain boundary weak links due to grain orientational misfit. This technique uses a suitable combination of a mechanical force and a magnetic field acting on the moment of a rare earth element incorporated into the ceramic; a "granular single crystal" is thus formed. A detailed step-by-step procedure is presented here to facilitate use of the new approach.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 249: Symposium Q – Synthesis and Processing of Ceramics: Scientific Issues , 1991 , 293
Copyright
Copyright © Materials Research Society 1992

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References

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