Discovery and Characterization of Antiferromagnetic UFe5As3

Zaremba, N.; Krnel, M.; Prots, Yu.; König, M.; Akselrud, L.; Grin, Yu.; Svanidze, E.

doi:10.1021/acs.inorgchem.3c03837

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Discovery and Characterization of Antiferromagnetic UFe₅As₃

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Zaremba, N.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons265604

Krnel, M.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126806

Prots, Yu.
Yuri Prots, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126702

König, M.
Markus König, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126510

Akselrud, L.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126626

Grin, Yu.
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons206323

Svanidze, E.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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引用

Zaremba, N., Krnel, M., Prots, Y., König, M., Akselrud, L., Grin, Y., & Svanidze, E. (2024). Discovery and Characterization of Antiferromagnetic UFe₅As₃. Inorganic Chemistry, 63(10), 4566-4573. doi:10.1021/acs.inorgchem.3c03837.

引用: https://hdl.handle.net/21.11116/0000-000F-1A38-6

要旨

This work presents a study on a new uranium iron arsenide UFe5As3. By implementing Bi-flux synthesis, we were able to grow mm-sized single crystals of this compound, which show twinning. UFe5As3 is one of only two known uranium iron arsenides. It adopts a monoclinic, UCr5P3-type crystal structure (space group P21/m, Pearson symbol mP18, a = 7.050(2) Å, b = 3.8582(9) Å, c = 9.634(1) Å, β = 100.25(1)°). The magnetic susceptibility of UFe5As3 indicates it to be an antiferromagnet with TN = 47 K and μeff = 4.94 μB per formula unit, signaling that both U and Fe are likely magnetic in this material. The material appears to be anisotropic, with a small (likely ferromagnetic) spin reorientation transition around T = 29 K. The Sommerfeld coefficient γ0 = 135 mJ mol-1 K-2 suggests enhanced effective electron mass in UFe5As3, while electrical resistivity indicates metallic, Kondo-like behavior. © 2024 The Authors. Published by American Chemical Society.