Magnetic Characterization of Zone-Refined Rare-Earth Orthoferrite Crystals Grown by the Optical Floating Zone Method

Mali, B and Das, S and Elizabeth, S (2023) Magnetic Characterization of Zone-Refined Rare-Earth Orthoferrite Crystals Grown by the Optical Floating Zone Method. In: Crystal Growth and Design .

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Abstract

High-purity single crystals of Sm1-xYxFeO3 (x = 0.7, 0.5, and 0.3) were grown in an optical floating zone furnace. Using the zone refining process concomitantly with floating zone growth, we eliminated the impurity phases detected in the synthesized polycrystalline orthoferrite compounds. The zone refining method is very effective in obtaining samples with high purity, especially when trace impurities have a notable influence on physical properties, such as in the case of Sm0.5Y0.5FeO3. The magnetic characteristics of the grown Sm1-xYxFeO3 crystals with varying Y contents are entirely free of spurious effects from impurities that are present in their ceramic or polycrystalline versions. Consequently, we could detect interesting spin configurations and spin reorientation transitions in these high-purity crystals. Sm0.5Y0.5FeO3 shows temperature-dependent exchange bias behavior along the a-orientation, which diminishes beyond the spin reorientation temperature. Consecutive MH loops measurements result in athermal-type exchange bias behavior. © 2024 American Chemical Society

Item Type:	Journal Article
Publication:	Crystal Growth and Design
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to American Chemical Society.
Keywords:	Iron compounds; Rare earths; Refining; Samarium compounds; Yttrium compounds, Exchange bias behaviors; Floating zone furnace; High purity; Magnetic characterization; Optical floating zones; Optical floating-zone method; Polycrystalline; Rare earth orthoferrites; Refining process; Zone-refining, Crystal impurities
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	01 Mar 2024 10:33
Last Modified:	01 Mar 2024 10:33
URI:	https://eprints.iisc.ac.in/id/eprint/84056

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