naa a22 4500 528794493 20180925065149.0 cr unu---uuuuu 180925s2018 xx s 000 0 eng 1098-0121 10.1103/PhysRevB.97.054410 doi (BORIS)oai:boris.unibe.ch:120071 620 ddc Spin-wave resonances in bismuth orthoferrite at high temperatures [Elektronische Daten] [M. Białek, A. Magrez, Axel Murk, J.-Ph. Ansermet] publishedVersion openAccess eu-repo 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. Białek M. joint author Magrez A. joint author Murk Axel joint author Ansermet J.-Ph joint author Physical review. B - condensed matter and materials physics 1098-0121 https://boris.unibe.ch/120071/1/PhysRevB.97.054410.pdf text/html WWW-Backlink auf das Repository 1 info:eu-repo/semantics/article boris PeerReviewed boris peerstatus BORIS 856 40 https://boris.unibe.ch/120071/1/PhysRevB.97.054410.pdf text/html WWW-Backlink auf das Repository BORIS 700 1- Białek M. joint author BORIS 700 1- Magrez A. joint author BORIS 700 1- Murk Axel joint author BORIS 700 1- Ansermet J.-Ph joint author BORIS 773 0- Physical review. B - condensed matter and materials physics 1098-0121 BK010053 XK010053 XK010000 BORIS BORIS BORIS info:eu-repo/semantics/article openAccess