Crystal structure and magnetism of UFe3B2 |
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| Authors: | M Dias PA Carvalho LCJ Pereira IC Santos O Tougait VH Tran AP Gonçalves |
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| Institution: | 1. Instituto Tecnológico e Nuclear, Instituto Superior Técnico, Universidade Técnica de Lisboa/CFMC-UL, P-2686-953 Sacavém, Portugal;2. Departamento de Engenharia de Materiais, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;3. Sciences Chimiques de Rennes, UMR CNRS 6226, Université de Rennes 1, Avenue de Général Leclerc, 35042 Rennes, France;4. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-950 Wroclaw, Poland |
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| Abstract: | The structure of the UFe3B2 compound has been refined down to R=0.022 and wR2=0.052 from single crystal X-ray diffraction data. This uranium boride crystallizes in the CeCo3B2 type-structure (P6/mmm space group no. 191, Z=1, ρ=10.79 g/cm3), with lattice parameters at room temperature a=0.5052(1) nm, c=0.3002(1) nm and V=0.664(1) nm3. Magnetization measurements made between 2 K and 800 K suggested that UFe3B2 is an antiferromagnet with a rather high Néel temperature of TN=268±5 K. No other magnetic transitions were observed down to the lowest studied temperature. |
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| Keywords: | Crystal structure Uranium intermetallic compound Boride |
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