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Synthesis of palladium carbides and palladium hydride in laser heated diamond anvil cells

Title data

Fedotenko, Timofey ; Dubrovinsky, Leonid ; Khandarkhaeva, Saiana ; Chariton, Stella ; Koemets, Egor ; Koemets, Iuliia ; Hanfland, M. ; Dubrovinskaia, Natalia:
Synthesis of palladium carbides and palladium hydride in laser heated diamond anvil cells.
In: Journal of Alloys and Compounds. Vol. 844 (2020) . - No. 156179.
ISSN 0925-8388
DOI: https://doi.org/10.1016/j.jallcom.2020.156179

Official URL: Volltext

Abstract in another language

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: V0 = 65.1 (1) Å3, K0 = 241 (9) GPa and K0’ = 2.1 (3) for PdC0.19(3), and V0 = 64.51 (5) Å3, K0 = 189 (8) GPa and K0’ = 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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Palladium carbide; Palladium hydride; High-pressure; X-ray diffraction; Equation of state
Institutions of the University: Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography > Chair Crystallography - Univ.-Prof. Dr. Sander van Smaalen
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Professor Materials Physics and Technology at Extreme Conditions
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Professor Materials Physics and Technology at Extreme Conditions > Professor Materials Physics and Technology at Extreme Conditions - Univ.-Prof. Dr. Natalia Doubrovinckaia
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 12 Apr 2021 11:26
Last Modified: 27 Apr 2021 06:28
URI: https://eref.uni-bayreuth.de/id/eprint/64641