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Magnetic structure study of the sawtooth chain antiferromagnet [Formula: see text].

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.

SUBMITTER: Nawa K 

PROVIDER: S-EPMC8674342 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature

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Magnetic structure study of the sawtooth chain antiferromagnet [Formula: see text].

Nawa Kazuhiro K   Avdeev Maxim M   Berdonosov Peter P   Sobolev Alexey A   Presniakov Igor I   Aslandukova Alena A   Kozlyakova Ekaterina E   Vasiliev Alexander A   Shchetinin Igor I   Sato Taku J TJ  

Scientific reports 20211215 1

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  ...[more]

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