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Synthesis of palladium carbides and palladium hydride in laser heated diamond anvil cells
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- Fedotenko, T. (author)
- Univ Bayreuth, Germany
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- Dubrovinsky, L. (author)
- Univ Bayreuth, Germany
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- Khandarkhaeva, S. (author)
- Univ Bayreuth, Germany
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- Chariton, S. (author)
- Univ Bayreuth, Germany
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- Koemets, E. (author)
- Univ Bayreuth, Germany
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- Koemets, I. (author)
- Univ Bayreuth, Germany
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- Hanfland, M. (author)
- European Synchrotron Radiat Facil, France
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- Dubrovinskaia, Natalia (author)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska fakulteten,Univ Bayreuth, Germany
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(creator_code:org_t)
- ELSEVIER SCIENCE SA, 2020
- English.
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In: Journal of Alloys and Compounds. - : ELSEVIER SCIENCE SA. - 0925-8388 .- 1873-4669. ; 844
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- The diamond anvil cell (DAC) technique is a powerful method for the synthesis and studying of novel materials at extreme conditions. In this work we report on high-pressure high-temperature (HPHT) synthesis of palladium carbides (PdCx) and palladium hydride (PdH) in a laser heated diamond anvil cell. Formation of PdCx with a face-centered cubic (fcc) structure resulted from a chemical reaction of Pd with carbon from the diamond anvils at a pressure of about 50 GPa and temperature of 2500-3000 K. The samples were analyzed in situ using synchrotron X-ray diffraction. The compressional behavior of PdC0.19(3) and PdC0.17(3), was studied on decompression. The fit of the pressure-volume data using the 3rd order Birch-Murnaghan equation of state gave the following parameters: V-0 = 65.1 (1) angstrom 3, K-0 = 241 (9) GPa and K-0 = 2.1 (3) for PdC0.19(3), and V-0 = 64.51 (5) angstrom(3), K-0 = 189 (8) GPa and K-0 = 4.5 (4) for PdC0.17(3). The palladium hydride PdH was synthesized at P = 39 (2) GPa and T = 1500 (200) K through a direct reaction of Pd with paraffin oil. (C) 2020 Elsevier B.V. All rights reserved.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Keyword
- Palladium carbide; Palladium hydride; High-pressure; X-ray diffraction; Equation of state
Publication and Content Type
- ref (subject category)
- art (subject category)
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