Magnetic structure study of the sawtooth chain antiferromagnet $$\hbox {Fe}_2\hbox {Se}_2\hbox {O}

Magnetic structure study of the sawtooth chain antiferromagnet $$\hbox {Fe}_2\hbox {Se}_2\hbox {O}_7$$

Published:2021-12 Issue:1 Volume:11 Page:
ISSN:2045-2322
Container-title:Scientific Reports
language:en
Short-container-title:Sci Rep

Author:

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

Abstract

AbstractA magnetic structure of the sawtooth-chain antiferromagnet

$$\hbox {Fe}_2\hbox {Se}_2\hbox {O}_7$$

Fe 2 Se 2 O 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.

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

Link

https://www.nature.com/articles/s41598-021-03058-5.pdf

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