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Title:
SUPERCONDUCTING MATERIAL
Document Type and Number:
Japanese Patent JPH09263407
Kind Code:
A
Abstract:

To provide a superconducting material not requiring cooling with liq. helium and having a high critical temp. by adopting a compsn. consisting of oxides of specified elements.

This superconducting material is represented by the formula RE2-xAExTMO4-y (where RE is one or more kinds of rare earth elements, preferably La, AE is one or more kinds of alkaline earth elements, preferably Sr, Ca or Ba, TM is a transition metal, preferably Cu, x<0.3 and y<0.5). It has a practically laminar perovskite type crystal structure, is based on copper oxide having a simple crystallographic phase and has ≥26K superconduction onset temp. at which electric resistance begins to lower and a crossover temp. below the superconduction onset temp. At the crossover temp., transition from a paramagnetic state to a diamagnetic state takes place.


Inventors:
YOHANESU GEORUGU BEDONORUTSU
KAARU AREKISANDAA MIYURAA
MASAAKI TAKASHIGE
Application Number:
JP21842496A
Publication Date:
October 07, 1997
Filing Date:
August 20, 1996
Export Citation:
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Assignee:
IBM
International Classes:
C01F17/00; C01G1/00; C01G3/00; H01B12/00; H01B13/00; H01L39/12; H02K55/00; (IPC1-7): C01G3/00; C01G1/00; H01B12/00; H01B13/00; H01L39/12
Domestic Patent References:
JPS63260853A1988-10-27
JPH02502903A1990-09-13
JPS63176353A1988-07-20
Attorney, Agent or Firm:
Kiyoshi Goda (2 outside)



 
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