Nawa K, Avdeev M, Berdonosov P, Sobolev A, Presniakov I, Aslandukova A, Kozlyakova E, Vasiliev A, Shchetinin I, Sato TJ. Magnetic structure study of the sawtooth chain antiferromagnet [Formula: see text].
Sci Rep 2021;
11:24049. [PMID:
34912012 PMCID:
PMC8674342 DOI:
10.1038/s41598-021-03058-5]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 11/23/2021] [Indexed: 11/22/2022] Open
Abstract
A magnetic structure of the sawtooth-chain antiferromagnet [Formula: see text] was investigated by magnetization measurements, single crystalline and powder neutron diffraction experiments, and a further analysis on the Mössbauer spectra. These experiments revealed a nearly collinear antiferromagnetic structure with magnetic moments aligned along the b-axis, indicating dominant antiferromagnetic exchanges between Fe(1)-Fe(2) and Fe(2)-Fe(3) sites. The magnon dispersion relation derived from the linear spin wave approximation suggests the possible flat band nature of magnons.
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