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Browse Prior Art Database

High Transition Temperature Superconductor Refiner

IP.com Disclosure Number: IPCOM000119686D
Original Publication Date: 1991-Feb-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Demuth, JE: AUTHOR

Abstract

A technique is described that allows refining and sorting of high transition temperature (Tc) superconducting materials by analyzing the critical temperatures.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 62% of the total text.

High Transition Temperature Superconductor Refiner

      A technique is described that allows refining and sorting
of high transition temperature (Tc) superconducting materials by
analyzing the critical temperatures.

      With the advent of new materials exhibiting high
superconducting Tc, it is important to isolate and separate new Tc
materials according to their transition temperatures and/or produce a
single phase of materials in larger quantities.  Many of the new
materials may not form single phases but instead consist of a
distribution of mixed composition and grain sizes.  Isolating and
separating new high Tc phases of novel or new composition materials
is needed so as to be able to discover new high Tc materials or to
produce sufficient quantities when single phase materials cannot be
formed.  The concept described herein allows a method of easily and
rapidly separating grains of new high Tc compounds according to their
transition temperatures.

      One form of the refiner, as shown in the figure, consists of
grinder 1, temperature column 2, magnet 3, selection aperture and
deflector 4 and collector 5.  The material to be refined, or sorted,
is first ground up in grinder 1 to the desired size and allowed to
fall, or slide, down temperature column 2.  The top of temperature
column 2 allows the material to be precooled to some temperature T1
which lies above the expected Tc.  Thereafter, the material slides
gradually down temperature column 2 as...