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2018 | 133 | 3 | 398-400
Article title

Physical Properties Study of the CeOsGa₄ Compound

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EN
Abstracts
EN
A polycrystalline sample of CeOsGa₄ was prepared by arc-melting stoichiometric quantities of high purity elements of 4N and greater, in an arc furnace. The data was confirmed to crystallize in an orthorhombic structure, with a space group Pmma (Number 51). Measurements of the magnetic susceptibility showed a distinct anomaly around T_{o} = 3.8 K, while the high temperature data (above 100 K) obeys Curie-Weiss law. The calculated effective moment of 2.44 μ_{B}, was obtained, which was a bit less than the theoretical moment for a Ce³⁺ ion of 2.54 μ_{B}. Magnetization data at T=2 K depicts that CeOsGa₄ does not saturate up to applied magnetic field of 7 T, while the data measured at 9 K indicates that the compound is purely paramagnetic at that temperature. The low temperature specific heat data is characterized by an anomaly at T_{o} = 3.8 K confirming the χ(T) data. Electrical resistivity shows a metallic behaviour at high temperatures with a deviation at low temperatures, signalling the cooperative behaviour which results to ordering. In this work we present the initial studies of the physical properties measurements performed on this compound.
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Contributors
author
  • Highly Correlated Matter Research Group, Department of Physics, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa
author
  • Highly Correlated Matter Research Group, Department of Physics, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa
References
  • [1] Yu.N. Grin', R.E. Gladyshevskii, O.M. Sichevich, V.E. Zavodnik, Ya.P. Yarmolyuk, I.V. Rozhdestvenskaya, Sov. Phys. Crystallogr. 29, 528 (1984)
  • [2] Yu.N. Grin', P. Rogl, Izv. Akad. Nauk SSSR, Neorg. Mater. 25, 593 (1989)
  • [3] M. Schlüter, W. Jeitschko, Inorg. Chem. 40, 6362 (2001), doi: 10.1021/ic010629i
  • [4] M. Schlüter, W. Jeitschko, Z. Anorg. Allg. Chem. 626, 2217 (2000), doi: 10.1002/1521-3749(200010)626:10%3C2217::AID-ZAAC2217%3E3.0.CO;2-B
  • [5] M. Schlüter, W. Jeitschko, Z. Anorg. Allg. Chem. 628, 1505 (2002), doi: 10.1002/1521-3749(200207)628:7%3C1505::AID-ZAAC1505%3E3.0.CO;2-3
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv133n3p018kz
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