A single-crystal x-ray and HRTEM study of the heavy-fermion compound

Autor:	I. Císarová, Eric Walker, Radovan Černý, R. Wessicken, Klaus Yvon, H. U. Nissen, Didier Jaccard, Vaclav Petricek, M. François
Rok vydání:	1996
Předmět:	Ytterbium Materials science X-ray chemistry.chemical_element Condensed Matter Physics Copper Crystallography chemistry Group (periodic table) Supercell (crystal) General Materials Science High-resolution transmission electron microscopy Single crystal Superstructure (condensed matter)
Zdroj:	Journal of Physics: Condensed Matter. 8:4485-4493
ISSN:	1361-648X 0953-8984
DOI:	10.1088/0953-8984/8/25/006
Popis:	The title compound crystallizes with monoclinic symmetry. Its structure derives from the cubic -type structure via the introduction of planar defects parallel to which lead to a nearly orthogonal supercell having the cell parameters , . A four-dimensional structural analysis reveals a quasi-linear modulation of the atomic positions and occupancies of ytterbium and copper along . On the basis of this result and the electron microscopy images, a three-dimensional model of the superstructure was constructed in space group C2. The model contains 7448 atoms per unit cell which are distributed over 350 Yb sites and 1519 Cu sites. It has the overall composition , contains short Yb - Yb distances, and is consistent with the chemical and physical properties.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c986c2130dafdc05a72ea3c679ab9520 https://doi.org/10.1088/0953-8984/8/25/006 Zobrazit plný text záznamu