Method of producing an RBa.sub.2 Cu.sub.3 O.sub.y microcrystalli

Details Method of producing an RBa.sub.2 Cu.sub.3 O.sub.y microcrystalli Method of producing an RBa.sub.2 Cu.sub.3 O.sub.y microcrystalli

1994-01-11

1995-07-11

Bell, Mark L.

Superconductor technology: apparatus, material, process

Processes of producing or treating high temperature...

With melting

505729, 505733, 505126, 505777, 505778, 505779, 505780, 505490, 423593, 423635, 423263, 501123, 501152, C04B 3545, H01B 1200

Patent

active

054321433

ABSTRACT:
A method of producing a microcrystalline RBa.sub.2 Cu.sub.3 O.sub.y structure where R denotes a lanthanide chosen from Y, La, Nd, Sm, Eu, Gd, Tb, Ho, Er, Tm, Yb and Lu and where y has a value between 6.9 and 7 starts with a powder of composition [x(123) ; (1-x) (7BaO--18CuO] where (123) denotes the 123 phase of RBaB.sub.2 Cu.sub.3 O.sub.y and where the value of x is between 0.01 and 1. The powder is compressed and sintered at a temperature below 920.degree. C. (the BaCuO.sub.2 and CuO binary eutectic temperature) to form a sample. The sample is placed on an oxide of the lanthanide R. The sample and its support undergo heat treatment enabling chemical reaction between the liquid part of the sample and its support whereby substantially all of the liquid part is consumed and highly regular 123 monocrystals are obtained. Cooling is applied. At least one annealing is carried out in pure oxygen at a temperature between 350.degree. C. and 500.degree. C. to obtain the orthorhombic form characteristic of RBa.sub.2 Cu.sub.3 O.sub.y.

REFERENCES:
patent: 5079220 (1992-01-01), Lechter et al.
Japanese Abstracts , C0778-14522 & JPA 2-217352, Aug. 30, 1990.

Affiliated with

Also associated with

Rating

Method of producing an RBa.sub.2 Cu.sub.3 O.sub.y microcrystalli does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing an RBa.sub.2 Cu.sub.3 O.sub.y microcrystalli, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing an RBa.sub.2 Cu.sub.3 O.sub.y microcrystalli will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-503429