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Materials Science & Technology Division, Oak Ridge National Laboratory, P. O. Box 2008, Building 4100, 1 Bethel Valley Road, Oak Ridge, USA
; Fax: +1 8655765023
; Tel: +1 8655764747
Dalton Trans., 2012,41, 12920-12925
31 Jul 2012,
28 Aug 2012
First published online
31 Aug 2012
Crystals of a new intermetallic germanide Ba2Pd5Ge4 have been grown out of a binary PdGe flux. Single crystal X-ray diffraction reveals that the compound crystallizes in a novel structure type in the Cmca space group, with a = 10.9296(9) Å, b = 14.1639(12) Å, and c = 5.8808(5) Å at 173(2) K. This structure type features a three-dimensional [Pd5Ge4] network made of distorted tetrahedral and square planar PdGe4 units, with Ba atoms filling the voids. The magnetic susceptibility and the electrical resistivity measurements show that Ba2Pd5Ge4 is a Pauli paramagnet and a metal with the room temperature resistivity value of ρ(300 K) ≈ 0.096 mΩ cm. The band structure calculations confirm that Ba2Pd5Ge4 is a good metal with no magnetic instability.
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