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Compressibility of Ir–Os alloys under high pressure

Title data

Yusenko, Kirill V. ; Bykova, Elena ; Bykov, Maxim ; Gromilov, Sergey A. ; Kurnosov, Alexander ; Prescher, Clemens ; Prakapenka, Vitali B. ; Hanfland, Michael ; van Smaalen, Sander ; Margadonna, Serena ; Dubrovinsky, Leonid:
Compressibility of Ir–Os alloys under high pressure.
In: Journal of Alloys and Compounds. Vol. 622 (15 February 2015) . - pp. 155-161.
ISSN 0925-8388
DOI: https://doi.org/10.1016/j.jallcom.2014.09.210

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft
BMBF FRINATEK

Abstract in another language

Several fcc- and hcp-structured Ir–Os alloys were prepared from single-source precursors in hydrogen atmosphere at 873 K. Their atomic volumes measured at ambient conditions using powder X-ray diffraction follow nearly linear dependence as a function of composition. Alloys have been studied up to 30 {GPa} at room temperature by means of synchrotron-based X-ray powder diffraction in diamond anvil cells. Their bulk moduli increase with increasing osmium content and show a deviation from linearity. Bulk modulus of hcp-Ir0.20Os0.80 is identical to that of pure Os (411 GPa) within experimental errors. Peculiarities on fcc-Ir0.80Os0.20 compressibility curve indicate possible changes of its electronic properties at ∼20 GPa.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Osmium
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
Profile Fields > Advanced Fields > Advanced Materials
Profile Fields
Profile Fields > Advanced Fields
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 530 Physics
Date Deposited: 01 Dec 2016 08:40
Last Modified: 30 Jul 2018 12:42
URI: https://eref.uni-bayreuth.de/id/eprint/35348