Title of article
High-pressure modifications of CaZn2, SrZn2, SrAl2, and BaAl2: Implications for Laves phase structural trends
Author/Authors
Subhadeep Kal، نويسنده , , Emil Stoyanov، نويسنده , , Jean-Philippe Belieres، نويسنده , , Thomas L. Groy، نويسنده , , Rolf Norrestam، نويسنده , , Ulrich H?ussermann، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
8
From page
3016
To page
3023
Abstract
High-pressure forms of intermetallic compounds with the composition CaZn2, SrZn2, SrAl2, and BaAl2 were synthesized from CeCu2-type precursors (CaZn2, SrZn2, SrAl2) and Ba21Al40 by multi-anvil techniques and investigated by X-ray powder diffraction (SrAl2 and BaAl2), X-ray single-crystal diffraction (CaZn2), and electron microscopy (SrZn2). Their structures correspond to that of Laves phases. Whereas the dialuminides crystallize in the cubic MgCu2 (C15) structure, the dizincides adopt the hexagonal MgZn2 (C14) structure. This trend is in agreement with the structural relationship displayed by sp bonded Laves phase systems at ambient conditions.
Keywords
Polar intermetallic phases , High pressure , CeCu2 structure type , Laves phases , Electron concentration controlled structural stability
Journal title
JOURNAL OF SOLID STATE CHEMISTRY
Serial Year
2008
Journal title
JOURNAL OF SOLID STATE CHEMISTRY
Record number
1333511
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