Twinning effects in the orthorhombic form of a Ba sub 2 YCu sub 3 O sub 7 minus x superconductor

Journal Article · Sat Sep 01 04:00:00 EDT 1990 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(90)90216-K· OSTI ID:6181416

Hendrixson, T L; Damento, M A; Jacobson, R A ^[1]

---

1. Ames Lab., IA (USA)

Twinning effects in a Ba{sub 2}YCu{sub 3}O{sub 7{minus}x} superconductor (orthorhombic form) have been analyzed by x-ray diffraction techniques. Regions of reciprocal space surrounding the (220), the (2{anti 2}0), the (400), and the (040) reflections for each of three twinned crystals were mapped on a single crystal diffractometer. Various modes of twinning were modeled by computer and the results were compared to the observed intensity distribution in the proximity of these reflections. A twinning mode based on a main and a smaller satellite crystal, each containing a mirror along h{anti h}0, with the satellite crystal rotated 90{degree} relative to the main crystal gave the best agreement to the observed data.

• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6181416
• Journal Information: Journal of Solid State Chemistry; (USA), Journal Name: Journal of Solid State Chemistry; (USA) Vol. 88:1; ISSN 0022-4596; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METALS
BARIUM
COHERENT SCATTERING
COPPER COMPOUNDS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUPRATES
DATA
DIFFRACTION
ELEMENTS
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
METALS
NUMERICAL DATA
ORTHORHOMBIC LATTICES
OXYGEN COMPOUNDS
SCATTERING
STRUCTURAL CHEMICAL ANALYSIS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TWINNING
X-RAY DIFFRACTION
YTTRIUM