Magnetic structure study of the sawtooth chain antiferromagnet Fe 2Se 2O 7

Kazuhiro Nawa, Maxim Avdeev, Peter Berdonosov, Alexey Sobolev, Igor Presniakov, Alena Aslandukova, Ekaterina Kozlyakova, Alexander Vasiliev, Igor Shchetinin, Taku J. Sato

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A magnetic structure of the sawtooth-chain antiferromagnet Fe 2Se 2O 7 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.

Original languageEnglish
Article number24049
JournalScientific reports
Issue number1
Publication statusPublished - 2021 Dec

ASJC Scopus subject areas

  • General


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