Published February 1, 1992 | Version v1
Journal article Metadata-only

Effects of Fe and Ni substitutions on the 1-2-4 structure of YBCO superconductors studied by high-resolution transmission electron microscopy

Creators

  • 1. National Inst. for Research in Inorganic Materials, Ibaraki (Japan)
  • 2. Government Industrial Research Inst., Nagoya (Japan)
  • 3. National Research Inst. for Metals, Tokyo (Japan)

Description

Structures and defects of YBa2Cu4Oy (1-2-4) type of superconductors, doped with Fe as well as Ni, are examined by HRTEM and the results are compard with those of the Co-substituted system reported previously. By Fe substitution, a part of the (CuO)2 double chain layers of the 1-2-4 structure is replaced with (CuO) single chain layers, as was the case in Co substitution. The single chains are induced rather randomly by Fe substitutions, while ordered structures such as 2-4-7 or 3-6-11 were obtained by Co substitutions. Contrary to Fe and Co substitutions, Ni substitution has little structural effects on the 1-2-4 structure. (orig.)

Additional details

Additional titles

Augmented title (English)
YBaCuFeO; YBaCuNiO

Publishing Information

Journal Title
Physica. C, Superconductivity
Journal Volume
191
Journal Issue
1/2
Series
Phys., C Supercond.
Journal Page Range
32-42
ISSN
0921-4534
CODEN
PHYCE

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
23042394
Subject category
S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
Descriptors DEI
BARIUM OXIDES; COPPER OXIDES; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DOPED MATERIALS; HIGH-TC SUPERCONDUCTORS; IRON OXIDES; NICKEL OXIDES; TRANSMISSION ELECTRON MICROSCO; X-RAY DIFFRACTION; YTTRIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; DIFFRACTION; ELECTRON MICROSCOPY; IRON COMPOUNDS; MATERIALS; MICROSCOPY; NICKEL COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SCATTERING; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS