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Licensed Unlicensed Requires Authentication Published by De Gruyter (O) September 25, 2009

Crystal structure and twinning of HfPdGe

Yurii Prots, Roman Demchyna, Ulrich Burkhardt and Ulrich Schwarz

The crystal structure of the intermetallic compound HfPdGe is investigated by means of X-ray single crystal and high-resolution synchrotron powder diffraction in combination with light microscopy. Investigated specimens exhibit twinning which can be described by a six-domain model of a monoclinic basic structure. The crystal structure of HfPdGe (space group P21/m, Pearson symbol mP18, a = 6.6573(1) Å, b = 3.9359(1) Å, c = 11.4411(2) Å, β = 90.102(1)°, Z = 6) comprises a three-dimensional polyanion of alternating palladium and germanium atoms with Pd—Ge distances varying between 2.499(2) Å and 2.647(3) Å. The structural motif of HfPdGe contains fragments of the TiNiSi and the ZrNiAl structure types.

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Received: 2007-April-19
Accepted: 2007-May-10
Published Online: 2009-09-25
Published in Print: 2007-10

© Oldenbourg Wissenschaftsverlag

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