Process and apparatus for preparing biaxially textured materials

Details Process and apparatus for preparing biaxially textured materials Process and apparatus for preparing biaxially textured materials

1993-07-20

1996-06-25

Bonner, C. Melissa

Superconductor technology: apparatus, material, process

Processes of producing or treating high temperature...

Using magnetic field

505727, 505779, 501152, 252521, H01L 3924

Patent

active

055299814

ABSTRACT:
The present invention discloses a process and apparatus for forming textures in materials. It uses so called "normal aligners" having an anisotropy in the paramagnetic susceptibility within a magnetic field having compositions REBa.sub.2 Cu.sub.3 O.sub.x or Bi(Tl).sub.2 Sr.sub.2 Ca.sub.1-y RE.sub.y Cu.sub.2 O.sub.x, where RE=Eu, Er, Tm, and Yb. One version of the process for preparing bulk and elongated objects comprises two steps. In the first step the material is uniaxially aligned. In the second step uniaxially aligned material is heated to a temperature approaching its melting point while a magnetic field of at least 10.sup.4 Oe, with a direction perpendicular to the axis of uniaxial alignment is simultaneously applied. The process results in biaxially, highly textured bulk and elongated materials.

REFERENCES:
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patent: 4942151 (1990-07-01), Capone et al.
patent: 4956339 (1990-09-01), Yamazaki
patent: 4990493 (1991-02-01), Lay
patent: 5057486 (1991-10-01), Arendt et al.
patent: 5079225 (1992-01-01), Holloway
patent: 5096880 (1992-08-01), Rybka
patent: 5168096 (1992-12-01), Tournier

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