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Open AccessArticle

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
Materials 2016, 9(8), 692;
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)
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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MDPI and ACS Style

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

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