Spin reorientation to a Γ3(Cx, Fy, Az) configuration and anisotropic spin-phonon coupling in a Sm0.5 Y0.5 FeO3 single crystal

Mali, B and Sunil, J and Nair, HS and Narayana, C and Elizabeth, S (2022) Spin reorientation to a Γ3(Cx, Fy, Az) configuration and anisotropic spin-phonon coupling in a Sm0.5 Y0.5 FeO3 single crystal. In: Physical Review B, 105 (21).

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Abstract

An unusual temperature-induced spin reorientation transition from Γ2(Fx, Cy, Gz)-Γ23-Γ3(Cx, Fy, Az) in orthoferrite Sm0.5Y0.5FeO3 is observed in the range 282-312 K through magnetic susceptibility measured on oriented single crystals. The Γ2-Γ23-Γ3 transition is distinctly different from the spin configurations commonly observed in RFeO3 orthoferrites, and we corroborate the finding with results from Raman spectroscopic investigations. Observation of magnon spectra and the vivid correlation between spin reorientation and changes in B2g and B3g phonon modes unveil strong spin-phonon coupling prevalent in Sm0.5Y0.5FeO3 crystal.

Item Type:	Journal Article
Publication:	Physical Review B
Publisher:	American Physical Society
Additional Information:	The copyright for this article belongs to the American Physical Society.
Keywords:	Iron compounds; Magnetic susceptibility; Phonons; Samarium compounds, Magnon spectrum; Orthoferrites; Phonon mode; Raman spectroscopic; Spectroscopic investigations; Spin configurations; Spin reorientation; Spin-phonon coupling; Spins reorientation transition; Temperature-induced, Single crystals
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	21 Sep 2022 10:07
Last Modified:	21 Sep 2022 10:07
URI:	https://eprints.iisc.ac.in/id/eprint/76706

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