Spin-wave resonances in bismuth orthoferrite at high temperatures

Białek, M.; Magrez, A.; Murk, Axel; Ansermet, J.-Ph. (2018). Spin-wave resonances in bismuth orthoferrite at high temperatures. Physical review. B - condensed matter and materials physics, 97(5) American Physical Society 10.1103/PhysRevB.97.054410

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Spin-wave resonances in pelletized powder of bismuth orthoferrite (BiFeO3) were studied in transmission spectroscopy at frequencies of 0.1–0.75 THz and in the temperature range of 300–650 K. A vector network analyzer with frequency extenders was used in conjunction with temperature scans. We extended the experimental coverage of spin-wave resonances in BiFeO3 up to almost the Néel temperature. We observed that Ψ(1)1 and Ψ(2)1 modes are degenerate around 420 K due to the temperature dependences of the magnetic anisotropy and the Dzyaloshinskii-Moriya interaction.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics

UniBE Contributor:

Murk, Axel

Subjects:

600 Technology > 620 Engineering

ISSN:

1098-0121

Publisher:

American Physical Society

Language:

English

Submitter:

Franziska Stämpfli

Date Deposited:

24 Sep 2018 09:34

Last Modified:

24 Sep 2018 09:34

Publisher DOI:

10.1103/PhysRevB.97.054410

BORIS DOI:

10.7892/boris.120071

URI:

https://boris.unibe.ch/id/eprint/120071

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