On the formation and crystal structure of the Pd6B phase

Autor:	Corneliu Sarbu, Viola Duppel, Tilmann Georg Berger, Andreas Leineweber, Eric J. Mittemeijer, Peter D. B. Fischer
Rok vydání:	2006
Předmět:	Inorganic Chemistry Crystallography Electron diffraction Chemistry Neutron diffraction X-ray crystallography General Materials Science Crystal structure Selected area diffraction Condensed Matter Physics Phase diagram Solid solution Monoclinic crystal system
Zdroj:	Zeitschrift für Kristallographie - Crystalline Materials. 221:450-463
ISSN:	2196-7105 2194-4946
Popis:	The crystal structure of the Pd6B phase has been elucidated employing selected-area electron diffraction and X-ray and neutron powder diffraction methods. It is based on a cubic close packed arrangement of Pd with B occupying 1/6 of the interstitial octahedral sites in an ordered way, such that a monoclinic (C2/c) superstructure results. The crystal structure contains isolated [BPd6] octahedral entities providing large distances between nearest neighbour boron atoms. Depending on the way of preparation, the same Pd6B phase can occur for the same composition in two different ‘manifestations’ having considerably different lattice parameters, which has a microstructural origin. Various phase equilibria between the ordered Pd6B phase and the disordered interstitial solid solution of boron in cubic close packed palladium have been investigated to clarify the corresponding regions in the phase diagram Pd—B.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d54b44501e6b24062dd0bfdc0f0c839c https://doi.org/10.1524/zkri.2006.221.5-7.450 Zobrazit plný text záznamu