Journal Article10.1016/0921-4534(91)91970-F
Defects, defect ordering, structural coherence and superconductivity in the 123 copper oxides
James D. Jorgensen,D. G. Hinks,Paolo G. Radaelli,Paolo G. Radaelli,Shiyou Pei,Philip Lightfoot,Bogdan Dabrowski,Bogdan Dabrowski,Carlo U. Segre,B.A. Hunter +9 more
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TL;DR: In this article, the influence of oxygen defects and defect ordering on superconductivity in 123 compounds was discussed, and structural coherence in the CuO 2 planes, which is present only if there is orthorhombic symmetry on at least a short length scale, is a requirement for supercondivity in these compounds.
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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 CuO 2 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.
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Citations
Definitive molecular level characterization of defects in UiO-66 crystals.
Christopher A. Trickett,Kevin J. Gagnon,Seungkyu Lee,Felipe Gándara,Hans-Beat Bürgi,Omar M. Yaghi +5 more
TL;DR: The missing linker defects in the zirconium-based MOF UiO-66, Zr6 O4 (OH)4 (C8 H4 O4 )6 , have been identified as water molecules coordinated directly to the zIRconium centers.
445
Magnetic correlations in high temperature superconductivity
Arno P. Kampf,Arno P. Kampf +1 more
TL;DR: In this article, the authors review results of basic experiments which probe the magnetic correlations in the CuO2 planes and give an overview of current phenomenological and microscopic approaches in the context of purely electronic Hubbard type models focusing on the role of AF spin fluctuations.
239
Oxygen determination from cell dimensions in YBCO superconductors
TL;DR: In this article, a simple procedure for the determination of non-stoichiometric oxygen in YBa2Cu3O7−δ (YBCO) superconductors is described, based on the relationship between oxygen content and c-axis parameter of the YBCO structure.
151
Crystal chemical substitutions and doping of YBa2CU3Ox and related superconductors
TL;DR: A review of the literature on substitutions and their effect on the properties of the 90 K superconductor YBa 2 Cu 3 O δ (YBCO) can be found in this paper.
111
References
Structural properties of oxygen-deficient YBa2Cu3O7- delta.
James D. Jorgensen,B. W. Veal,Arvydas P. Paulikas,L.J. Nowicki,G. W. Crabtree,Helmut Claus,W. K. Kwok +6 more
TL;DR: In this paper, the structural properties of oxygen-deficient (YBa) and copper-oxygen bond lengths have been determined by neutron powder diffraction for 0.07l and 0.91l, respectively.
1.2K
Structural anomalies, oxygen ordering and superconductivity in oxygen deficient Ba2YCu3Ox
Robert J. Cava,A.W. Hewat,Elizabeth A. Hewat,Bertram Batlogg,M. Marezio,M. Marezio,Karin M. Rabe,J. J. Krajewski,W. F. Peck,L. W. Rupp +9 more
TL;DR: In this article, the authors report the characterization of series of oxygen deficient Ba2YCu3Ox samples for 7 ≥ x ≥ 6 prepared by Zr gettered annealing at 440°C.
1K
Single-phase 60-K bulk superconductor in annealed Ba2YCu
TL;DR: In this paper, a gettered annealing technique was employed to obtain homogeneous polycrystalline samples of oxygen deficient Ba/sub 2/YCu/sub 3/O/sub 7-sub delta/ for 0less than or equal todeltaless than and equal to 0.7.
892
Oxygen ordering, phase separation and the 60-K and 90-K plateaus in YBa2Cu3Ox
Robert Beyers,B.T. Ahn,G. Gorman,V. Y. Lee,Stuart S. P. Parkin,M. L. Ramirez,Kevin P. Roche,J. E. Vazquez,Turgut M. Gür,Robert A. Huggins +9 more
TL;DR: In this paper, the authors report on the ordered oxygen structures and superconducting properties of YBa2Cu3Ox samples prepared in precisely controlled oxygen environments using a solid-state ionic technique.
296
Neutron and electron diffraction study of YBa2Cu22Cu1.77Fe.23O7.13
TL;DR: In this paper, the compound of formula YBa 2 Cu 2.7 Fe 0.3 O 7.13 has been analyzed by neutron and electron diffraction techniques, and the results indicate that Fe 3+ is present in tetrahedral coordination and Fe 4+ in pyramidal and octahedral coordination.
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