Modulated corrugations in the crystal structure of the superconductor CaAlSi

We report the crystal structure analyses of CaAlSi from single‐crystal and powder X‐ray diffraction and the existence of two commensurately modulated phases, a sixfold and a fivefold modulated structure. This polymorphism seems to be correlated to the thermal history of the sample. We describe both...

Full description

Saved in:
Bibliographic Details
Published in:Acta crystallographica. Section B, Structural science Structural science, 2006-10, Vol.62 (5), p.710-718
Main Authors: Sparta, Karine M., Müller, Ralf, Merz, Michael, Roth, Georg, Adelmann, Peter, Wolf, Thomas
Format: Article
Language:English
Subjects:
CaAlSi
commensurately modulated structures
Condensed matter: structure, mechanical and thermal properties
Crystal structure
Crystalline state (including molecular motions in solids)
Crystallographic aspects of phase transformations
pressure effects
Crystallography
Diffraction
Exact sciences and technology
Inorganic compounds
Physics
Polymorphism
powder X-ray diffraction
single-crystal X-ray diffraction
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
Superconductors
X-rays
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We report the crystal structure analyses of CaAlSi from single‐crystal and powder X‐ray diffraction and the existence of two commensurately modulated phases, a sixfold and a fivefold modulated structure. This polymorphism seems to be correlated to the thermal history of the sample. We describe both modulated structures using a three‐dimensional and a (3 + 1)‐dimensional formalism.
ISSN:0108-7681
2052-5192
1600-5740
2052-5206
DOI:10.1107/S0108768106025900