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Candidate HTSC Film Substrates of Complex Oxide Perovsk1te Compositions

Published online by Cambridge University Press:  15 February 2011

Ruyan Guo ,
A. S. Bhalla ,
Rustum Roy  and
L. E. Cross
Ruyan Guo
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802
A. S. Bhalla
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802
Rustum Roy
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802
L. E. Cross
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802
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Abstract

The research focused upon generating new substrate materials for the deposition of superconducting yttrium barium cuprate (YBCO) has yielded several new hosts in complex perovskites, modified perovskites, and other structure families. New substrate candidates such as Sr(Al1/2Ta1/2)O3 and Sr(Al1/2Nb1/2)O3, Ba(Mg1/3Ta2/3)O3 in complex oxide perovskite structure family and their solid solutions with ternary perovskite LaAlO3 and NdGaO3 are reported. Conventional ceramic processing techniques were used to fabricate dense ceramic samples. A laser heated molten zone growth system was utilized for the test-growth of these candidate materials in single crystal fiber form to determine crystallographic structure, melting point, thermal, and dielectric properties as well as to make positive identification of twin free systems. Some of those candidate materials present an excellent combination of properties suitable for microwave HTSC substrate applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 341: Symposium F – Epitaxial Oxide Thin Films and Heterostructures , 1994 , 215
Copyright
Copyright © Materials Research Society 1994

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