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

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 antiferromagnet...

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Detalles Bibliográficos
Autores principales: Nawa, Kazuhiro, Avdeev, Maxim, Berdonosov, Peter, Sobolev, Alexey, Presniakov, Igor, Aslandukova, Alena, Kozlyakova, Ekaterina, Vasiliev, Alexander, Shchetinin, Igor, Sato, Taku J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8674342/
https://www.ncbi.nlm.nih.gov/pubmed/34912012
http://dx.doi.org/10.1038/s41598-021-03058-5
Descripción
Sumario: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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