The Fine Structure of YCuO2+x Delafossite Determined by Synchrotron Powder Diffraction and Electron Microscopy

Tendeloo, Gustaaf Van; Garlea, V. Ovidiu; Darie, Céline; Bougerol, Catherine; Bordet, Pierre

doi:10.1006/jssc.2000.9018

Cited by 46 publications

(50 citation statements)

References 6 publications

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“…Intercalation of oxygen into delafossite structure always takes place in Cu atomic planes [21]. The crystallographic site for intercalated oxygen is at the center of a triangle of Cu atoms (inset Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of CuFeO2+δ delafossite powders

2006

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. AbstractEffects of oxygen off-stoichiometry have been investigated on CuFeO 2+d delafossite-type powders prepared by solid state reaction. Materials annealed at different temperatures under air atmosphere were compared. Thermogravimetric analysis coupled with X-ray structural analysis showed that a powdered CuFeO 2 can be oxidized up to CuFeO 2+d with d = 0.18. Electrical measurements confirm the existence of oxidized CuFeO 2+d phases. Particular attention is paid to the correlation between oxidation process and phase stabilities in the CuFeO 2 and copper spinel phase system.

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Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of CuFeO2+δ delafossite powders

2006

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“…Another possibility is the insertion of oxygen atoms in the copper layers. Large amounts of oxygen can be inserted within the delafossite network as first demonstrated by Cava's group [22] and in Bordeaux [23] and structures of oxygen-rich phases were determined by Bordet's group [24]. However, large amounts of oxygen can be inserted only when the a lattice constant (the length of which is directly related to the size of the trivalent M element) is large enough like for rare earth, and the lower limit seems correspond to scandium [25].…”

Section: Article In Pressmentioning

confidence: 96%

Preparation and physical properties of the solid solutions Cu1+xMn1−xO2 ()

Trari

Töpfer

Dordor

et al. 2005

Journal of Solid State Chemistry

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“…The non-superconductor phase is found to be Ba-free by EDS and considered to be RECuO 2+x , as reported in [10]. The density of RECuO 2+x and small grain boundaries in the 25% Zr-added film are found to be higher than that in the 20% Zr-added film.…”

Section: Defects In High Zr-content Filmsmentioning

confidence: 76%

The Structural Evolution of $(\hbox{Gd}, \hbox{Y}) \hbox{Ba}_{2}\hbox{Cu}_{3}\hbox{O}_{\rm x}$ Tapes With Zr Addition Made by Metal Organic Chemical Vapor Deposition

Galstyan

Chen²,

Shi

et al. 2013

IEEE Trans. Appl. Supercond.

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Structural analysis of (Gd, Y)Ba 2 Cu 3 O x tapes with Zr addition made by metal organic chemical vapor deposition has been conducted with transmission electron microscopy and X-ray diffraction. Zr content in the films was varied from 0 to 25% in the precursor. In all Zr-doped films, self-assembled nanocolumnar structures of BaZrO 3 (BZO) were observed along the c-axis. The amount of BaZrO 3 was found to increase steadily with Zr content. Additionally, planar BZO plates were found on the (001) plane of (Gd, Y)Ba 2 Cu 3 O x film. The size and thickness of BZO plates were seen to increase with Zr doping level. Rare-earth copper oxide phases were observed to begin to emerge in the 20% Zr-doped film. Cross-sectional study of the interface between (Gd, Y)Ba 2 Cu 3 O x and LaMnO 3 cap layer revealed a thin discrete BZO layer on the LaMnO 3 in the 20% Zr doped film.Index Terms-2G high-temperature superconductor (HTS), Metal organic chemical vapor deposition (MOCVD), microstructure, pinning effect, transmission electron microscopy (TEM).

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The Fine Structure of YCuO2+x Delafossite Determined by Synchrotron Powder Diffraction and Electron Microscopy

Cited by 46 publications

References 6 publications

Synthesis and characterization of CuFeO2+δ delafossite powders

Synthesis and characterization of CuFeO2+δ delafossite powders

Preparation and physical properties of the solid solutions Cu1+xMn1−xO2 ()

The Structural Evolution of $(\hbox{Gd}, \hbox{Y}) \hbox{Ba}_{2}\hbox{Cu}_{3}\hbox{O}_{\rm x}$ Tapes With Zr Addition Made by Metal Organic Chemical Vapor Deposition

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