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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Antiferromagnetic Arsenides U8Co42As25 and UCo3As2
Nazar Zaremba1, Mitja Krnel1, Yurii Prots1
1Max Planck Institute for Chemical Physics of Solids, 01187Dresden, Germany.
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Arsenides continue to captivate the fields of inorganic chemistry and condensed matter physics. In this work we present the discovery of two new members of this family─U8Co42As25 and UCo3As2─which were synthesized in single crystalline form. U8Co42As25 is the first representative of the Y8Co41As25structure type (space group P63/m, Pearson symbol hP75, a = 17.7460(5) Å, c = 3.8120(1) Å), while UCo3As2 adopts HoCo3P2 type of structure (space group Pmmn, Pearson symbol oP36, a = 3.8611(2) Å, b = 10.8414(6) Å, c = 12.7297(6) Å). Both materials order antiferromagnetically─U8Co42As25 at TN = 26 K and UCo3As2 at TN = 67 K.
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