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Spin-wave propagation in alpha-Fe2O3 nanorods: the effect of confinement and disorder

Cortie, David; Casillas-Garcia, Gilberto; Squires, Andrew; Mole, Richard; Wang, Xiaolin; Liu, Yun; Chen, Yen-Hua; Yu, Dehong

Description

Spin-wave excitations in α-Fe2O3 nanorods were directly detected using time-of-flight inelastic neutron spectroscopy. The dispersive magnon features are compared with those in bulk α-Fe2O3 particles at various temperatures to highlight differences in mode intensity and width. The interchanged spectral intensities in the nanorod are a consequence of a suppressed spin orientation, and this is also evident in the neutron diffraction which demonstates that the weak ferromagnetic phase survives to...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
URI: http://hdl.handle.net/1885/201698
Source: Journal of Physics: Condensed Matter
DOI: 10.1088/1361-648X/ab04ca

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