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Order and Disorder in Cluster Phases – The Case of La ≈0.7 (Al ≈0.1 I ≈0.9 )
Author(s) -
Kienle Lorenz,
Oeckler Oliver,
Weber Thomas,
Duppel Viola,
Mattausch Hansjürgen,
Simon Arndt
Publication year - 2007
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200601218
Subject(s) - chemistry , cluster (spacecraft) , crystallography , condensation , phase (matter) , diffraction , electron diffraction , structure type , order (exchange) , crystal structure , physics , thermodynamics , finance , economics , organic chemistry , computer science , optics , programming language
Abstract The structure of the new partially ordered cluster phase La 0.69(1) (Al 0.12(1) I 0.88(1) ) was determined by a combined methodical approach of electron microscopy techniques and X‐ray diffraction. The structure is derived from the Gd 3 CCl 3 ‐type and ca. 50 % of the cluster positions in this structure type are occupied. The majority of the clusters are condensed via common edges, however, the degree of cluster condensation is low. The arrangement of neighboring clusters is comparable to chemically related, but strongly disordered cluster phases. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)