Anomalous Ferromagnetic Phase in the Gd1−xErxB4 Series: Crystal Growth, Thermal, and Magnetic Properties

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dc.contributor.advisorOrcidhttps://orcid.org/0000-0001-8023-7080
dc.contributor.authorMASUNAGA, S. H.
dc.contributor.authorV. B. Barbeta
dc.contributor.authorABUD, F.
dc.contributor.authorTORIKACHVILI, M. S.
dc.contributor.authorJARDIM, R. F.
dc.date.accessioned2023-09-01T06:03:59Z
dc.date.available2023-09-01T06:03:59Z
dc.date.issued2023-07-23
dc.description.abstract© 2023 by the authors.Rare-earth tetraborides RB4 are of great interest due to the occurrence of geometric magnetic frustration and corresponding unusual magnetic properties. While the Gd3+ spins in GdB4 align along the ab plane, Er3+ spins in the isomorphic ErB4 are confined to the c–axis. The magnetization in the latter exhibits a plateau at the midpoint of the saturation magnetization. Therefore, solid solutions of (Gd, Er)B4 provide an excellent playground for exploring the intricate magnetic behavior in these compounds. Single crystals of Gd1−xErxB4 (x = 0, 0.2, and 0.4) were grown in aluminum flux. X-ray diffraction scans revealed single-phase materials, and a drop in the unit cell volume with increasing Er content, suggesting the partial substitution of Er at the Gd sites. Heat capacity measurements indicated a systematic decrease of the Néel temperature (TN) with increasing Er content. The effective magnetic moment determined from the magnetization measurement agreed with the calculated free ion values for Gd3+ and Er3+, providing further evidence for the successful substitution of Er for Gd. The partial substitution resulted in an anomalous ferromagnetic phase below TN, exhibiting significant anisotropy, predominantly along the c-axis. This intriguing behavior merits further studies of the magnetism in the Gd1−xErxB4 borides.
dc.description.issuenumber7
dc.description.volume13
dc.identifier.citationMASUNAGA, S. H.; BARBETA, V. B.; ABUD, F.; TORIKACHVILI, M. S.; JARDIM, R. F. Anomalous Ferromagnetic Phase in the Gd1−xErxB4 Series: Crystal Growth, Thermal, and Magnetic Properties. Crystals, v. 13, n. 7, jul. 2023.
dc.identifier.doi10.3390/cryst13071137
dc.identifier.issn2073-4352
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/5085
dc.relation.ispartofCrystals
dc.rightsAcesso Aberto
dc.rights.licenseCreative Commons "Este é um artigo publicado em acesso aberto sob uma licença" Creative commons (CC BY 4.0). Fonte: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85166265966&origin=inward. Acesso em: 14 set. 2023.
dc.subject.otherlanguageantiferromagnetism
dc.subject.otherlanguageflux method
dc.subject.otherlanguagegeometric magnetic frustration
dc.subject.otherlanguageinduced ferromagnetism
dc.subject.otherlanguageShastry–Sutherland
dc.subject.otherlanguagespecific heat
dc.subject.otherlanguagesusceptibility
dc.subject.otherlanguagetetraborides
dc.titleAnomalous Ferromagnetic Phase in the Gd1−xErxB4 Series: Crystal Growth, Thermal, and Magnetic Properties
dc.typeArtigo
fei.scopus.citations1
fei.scopus.eid2-s2.0-85166265966
fei.scopus.updated2024-12-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85166265966&origin=inward
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