Oxide electronics

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Structural inhomogeneities in oxygen-deficient ErBa2Cu3O6+x associated with the tetragonal-to-orthorhombic transition: Evidence of first-order behavior.

Phys Rev B Condens Matter 45:9 (1992) 4923-4929

Authors:

PG Radaelli, CU Segre, DG Hinks, JD Jorgensen
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NEW FAMILY OF PLANAR CUPRATE SUPERCONDUCTORS

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 203 (1992) 654-INOR

Authors:

KR POEPPELMEIER, JT VAUGHEY, MT ANDERSON, DA GROENKE, R TOREKI, B DABROWSKI, DG HINKS, AW MITCHELL, P RADAELLI
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STRUCTURAL INHOMOGENEITIES IN OXYGEN-DEFICIENT ERBA2CU3O6+X ASSOCIATED WITH THE TETRAGONAL-TO-ORTHORHOMBIC TRANSITION - EVIDENCE OF 1ST-ORDER BEHAVIOR

PHYSICAL REVIEW B 45:9 (1992) 4923-4949

Authors:

PG RADAELLI, CU SEGRE, DG HINKS, JD JORGENSEN
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STRUCTURE, DIMENSIONALITY AND SUPERCONDUCTIVITY IN OXIDES

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 204 (1992) 121-INOR

Authors:

DG HINKS, JD JORGENSEN, P RADAELLI, B DABROWSKI, B HUNTER, J WAGNER
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Defects, defect ordering, structural coherence and superconductivity in the 123 copper oxides

Physica C: Superconductivity and its applications 185-189:PART 1 (1991) 184-189

Authors:

JD Jorgensen, DG Hinks, PG Radaelli, S Pei, P Lightfoot, B Dabrowski, CU Segre, BA Hunter

Abstract:

We discuss the influence of oxygen defects and defect ordering on superconductivity in 123 compounds. Because of the complexity of the high-temperature phase diagram, the synthesis history can significantly influence the properties. Room-temperature annealing experiments show that defect ordering on a short length scale can have a remarkable affect on superconductivity. We propose that structural coherence in the CuO2 planes, which is present only if there is orthorhombic symmetry on at least a short length scale, is a requirement for superconductivity in these compounds. © 1991.
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