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On the properties of the novel CeMgNi2T2 (T = Co, Cu) alloys and their hydrides
AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Mickiewicza 30, PL-30059 Krakow, Poland.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Inorganic Chemistry.
AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Mickiewicza 30, PL-30059 Krakow, Poland.
AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Mickiewicza 30, PL-30059 Krakow, Poland.
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2020 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 814, article id 152244Article in journal (Refereed) Published
Abstract [en]

In this contribution, we report the results of the studies on the novel CeMgNi2Co2 and CeMgNi2Cu2 alloys and their hydrides/deuterides. Both the parent alloys and the CeMgNi2Co2H6.1 hydride crystallize in the MgCu4Sn-type structure, while the CeMgNi2Cu2H6.0 hydride becomes almost completely amorphous. In the MgCu4Sn structure the 3d metals are distributed over the 16e site forming the pyrochlore lattice. That makes this system particularly interesting as concerns the magnetic properties. Our studies reveal that magnetic susceptibilities of the alloys are weakly temperature-dependent and therefore, the Pauli-like paramagnetism can be suggested. Additionally, the results of the low temperature neutron diffraction experiments revealed the lack of the long-range magnetic ordering.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA , 2020. Vol. 814, article id 152244
Keywords [en]
Metal-hydrogen systems, Structural properties, Magnetic frustration, X-ray and neutron diffraction
National Category
Materials Chemistry Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:uu:diva-396499DOI: 10.1016/j.jallcom.2019.152244ISI: 000490765400069OAI: oai:DiVA.org:uu-396499DiVA, id: diva2:1368424
Funder
Swedish Energy AgencyAvailable from: 2019-11-07 Created: 2019-11-07 Last updated: 2019-11-07Bibliographically approved

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Shtender, Vitalii

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