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Role of Dy on the magnetic properties of orthorhombic DyFeO3
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SYSNO ASEP 0560106 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Role of Dy on the magnetic properties of orthorhombic DyFeO3 Author(s) Biswas, B. (CH)
Michel, Veronica F. (CH)
Fjellvag, Oystein S. (CH)
Bimashofer, G. (CH)
Doebeli, M. (CH)
Jambor, Michal (UFM-A) ORCID, RID
Keller, L. (CH)
Mueller, E. (CH)
Ukleev, V. (CH)
Pomjakushina, E. (CH)
Singh, D. (CH)
Stuhr, U. (CH)
Vaz, C. A. F. (CH)
Lippert, T. (CH)
Schneider, Christof W. (CH)Number of authors 15 Article number 074401 Source Title Physical Review Materials. - : American Physical Society - ISSN 2475-9953
Roč. 6, č. 7 (2022)Number of pages 9 s. Language eng - English Country US - United States Keywords Antiferromagnetism ; Binary alloys ; Magnetic materials Subject RIV JG - Metallurgy OECD category Materials engineering Method of publishing Limited access Institutional support UFM-A - RVO:68081723 UT WOS 000834035300002 EID SCOPUS 85135719973 DOI 10.1103/PhysRevMaterials.6.074401 Annotation Orthoferrites are a class of magnetic materials with a magnetic ordering temperature above 600 K, predominant G-type antiferromagnetic ordering of the Fe-spin system and, depending on the rare-earth ion, a spin reorientation of the Fe spin taking place at lower temperatures. DyFeO3 is of particular interest since the spin reorientation is classified as a Morin transition with the transition temperature depending strongly on the Dy-Fe interaction. Here, we report a detailed study of the magnetic and structural properties of microcrystalline DyFeO3 powder and bulk single crystal using neutron diffraction and magnetometry between 1.5 and 450 K. We find that, while the magnetic properties of the single crystal are largely as expected, the powder shows strongly modified magnetic properties, including a modified spin reorientation and a smaller Dy-Fe interaction energy of the order of 10 mu eV. Subtle structural differences between powder and single crystal show that they belong to distinct magnetic space groups. In addition, the Dy ordering at 2 K in the powder is incommensurate, with a modulation vector of 0.0173(5) c*, corresponding to a periodicity of similar to 58 unit cells. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2023 Electronic address https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.6.074401
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