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Materials 2016, 9(8), 692;

High Pressure Properties of a Ba-Cu-Zn-P Clathrate-I

Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
Author to whom correspondence should be addressed.
Academic Editor: Matt Beekman
Received: 1 June 2016 / Revised: 27 July 2016 / Accepted: 6 August 2016 / Published: 12 August 2016
(This article belongs to the Special Issue Inorganic Clathrate Materials)
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The high pressure properties of the novel tetrel-free clathrate, Ba8Cu13.1Zn3.3P29.6, were investigated using synchrotron powder X-ray diffraction. The pressure was applied using a diamond anvil cell. No structural transitions or decomposition were detected in the studied pressure range of 0.1–7 GPa. The calculated bulk modulus for Ba8Cu13.1Zn3.3P29.6 using a third-order Birch-Murnaghan equation of state is 65(6) GPa at 300 K. This bulk modulus is comparable to the bulk moduli of Ge- and Sn-based clathrates, like A8Ga16Ge30 (A = Sr, Ba) and Sn19.3Cu4.7P22I8, but lower than those for the transition metal-containing silicon-based clathrates, Ba8TxSi46−x, T = Ni, Cu; 3 ≤ x ≤ 5. View Full-Text
Keywords: clathrate; high pressure; powder X-ray diffraction; bulk modulus clathrate; high pressure; powder X-ray diffraction; bulk modulus

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Dolyniuk, J.-A.; Kovnir, K. High Pressure Properties of a Ba-Cu-Zn-P Clathrate-I. Materials 2016, 9, 692.

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