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Antiferromagnetic Order Breaks Inversion Symmetry in a Metallic Double Perovskite, Pb2NiOsO6

Feng, Hai L., Kang, Chang-Jong, Manuel, Pascal, Orlandi, Fabio, Su, Yu, Chen, Jie, Tsujimoto, Yoshihiro, Hadermann, Joke, Kotliar, Gabriel, Yamaura, Kazunari, and others. (2021) Antiferromagnetic Order Breaks Inversion Symmetry in a Metallic Double Perovskite, Pb2NiOsO6. Chemistry of Materials, . ISSN 0897-4756. E-ISSN 1520-5002. (doi:10.1021/acs.chemmater.1c01032) (KAR id:88396)

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A polycrystalline sample of Pb2NiOsO6 was synthesized under high-pressure (6 GPa) and high-temperature (1575 K) conditions. Pb2NiOsO6 crystallizes in a monoclinic double perovskite structure with a centrosymmetric space group P21/n at room temperature. Pb2NiOsO6 is metallic down to 2 K and shows a single antiferromagnetic (AFM) transition at TN = 58 K. Pb2NiOsO6 is a new example of a metallic and AFM oxide with three-dimensional connectivity. Neutron powder diffraction and first-principles calculation studies indicate that both Ni and Os moments are ordered below TN and the AFM magnetic order breaks inversion symmetry. This loss of inversion symmetry driven by AFM order is unusual in metallic systems, and the 3d–5d double-perovskite oxides represent a new class of noncentrosymmetric AFM metallic oxides.

Item Type: Article
DOI/Identification number: 10.1021/acs.chemmater.1c01032
Uncontrolled keywords: Group theory,Oxides,Quantum mechanics,Order,Nuclear structure
Subjects: Q Science
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: Emma McCabe
Date Deposited: 27 May 2021 14:57 UTC
Last Modified: 26 May 2022 23:00 UTC
Resource URI: (The current URI for this page, for reference purposes)
McCabe, Emma E.:
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