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High Tc Oxide Solid State Reaction Kinetics Via Complex Impedance Spectroscopy

Published online by Cambridge University Press:  28 February 2011

E. A. Cooper ,
T. O. Mason ,
U. Balachandran  and
M. L. Kullberg
E. A. Cooper
Affiliation:
Northwestern University, Department of Materials Science and Engineering, Evanston IL 60208
T. O. Mason
Affiliation:
Northwestern University, Department of Materials Science and Engineering, Evanston IL 60208
U. Balachandran
Affiliation:
Argonne National Laboratory, Materials Components and Technology Division, Argonne, IL 60439
M. L. Kullberg
Affiliation:
Argonne National Laboratory, Materials Components and Technology Division, Argonne, IL 60439 On leave from Amoco Chemical Co., Naperville, IL 60566
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Abstract

Impedance spectra (5Hz ‐ 13MHz) were collected during the solid state reaction of Yba2Cu2O6+y from large monosized CuO particles imbedded in a finely divided Y2 O3 /BaCO3 matrix. No particle size effect was observed, but a large temperature effect was observed corresponding to an activation energy of approximately 1.8eV (175kJ/mol) over the range 700‐900°C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 265
Copyright
Copyright © Materials Research Society 1990

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References

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