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Tailoring Microstructures Under Strong Non-Equilibrium Conditions: A Feasible Path Towards High JC in Melt Textured YBa2Cu3O7

Published online by Cambridge University Press:  18 March 2011

Felip Sandiumenge ,
Jérôme Plain ,
Teresa Puig ,
Xavier Obradors ,
Jacques Rabier  and
Maria J. Martínez
Felip Sandiumenge
Affiliation:
ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Spain
Jérôme Plain
Affiliation:
ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Spain LMP, Université de Poitiers, SP2MI, 86960 Futuroscope-Chasseneuil, France
Teresa Puig
Affiliation:
ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Spain
Xavier Obradors
Affiliation:
ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Spain
Jacques Rabier
Affiliation:
LMP, Université de Poitiers, SP2MI, 86960 Futuroscope-Chasseneuil, France
Maria J. Martínez
Affiliation:
ICMM-CSIC, Cantoblanco, 28049 Madrid, Spain
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Abstract

Melt textured YBa2Cu3O/Y2BaCuO5 were post processed by high oxygen pressure for different periods and temperatures. This process permits the control of the microstructure, in particular the growth and shape of the stacking faults and thereby the partial dislocation density. Analysis of the Jc(H,T) behavior allow to separate the contribution of Y2BaCuO5 interface from that of dislocations. It is shown that the in-plane partial dislocations act as point-like pinning centers increasing Jc up to 180% but this enhancement factor is counterbalanced by the effect of the stacking faults associated to the partial dislocations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 659: Symposium II – High-Temperature Superconductors-Crystal Chemistry, Processing & Properties , 2000 , II7.6
Copyright
Copyright © Materials Research Society 2001

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References

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