LUCENILDO DA SILVA, Klebson, Rafael SANTIAGO TRAUTWEIN, Rodolfo BEZERRA DA SILVA, Martin FABIÁN, Erik ČIŽMÁR, Mariia HOLUB, Olha SKURIKHINA, Marta HARNIČÁROVÁ, Vladimír GIRMAN, Dirk MENZEL, Klaus Dieter BECKER, Horst HAHN a Vladimír ŠEPEĽÁK. Suppression of the Cycloidal Spin Arrangement in BiFeO3 Caused by the Mechanically Induced Structural Distortion and Its Effect on Magnetism. Frontiers in Materials. AVENUE DU TRIBUNAL FEDERAL 34, LAUSANNE: Frontiers Media S.A, volume 8, č. 2021, s. nestránkováno, 9 s. ISSN 2296-8016. 2021.
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Základní údaje
Originální název Suppression of the Cycloidal Spin Arrangement in BiFeO3 Caused by the Mechanically Induced Structural Distortion and Its Effect on Magnetism
Autoři LUCENILDO DA SILVA, Klebson (garant), Rafael SANTIAGO TRAUTWEIN, Rodolfo BEZERRA DA SILVA, Martin FABIÁN, Erik ČIŽMÁR, Mariia HOLUB, Olha SKURIKHINA, Marta HARNIČÁROVÁ (203 Česká republika, domácí), Vladimír GIRMAN, Dirk MENZEL, Klaus Dieter BECKER, Horst HAHN a Vladimír ŠEPEĽÁK (703 Slovensko, domácí).
Vydání Frontiers in Materials, AVENUE DU TRIBUNAL FEDERAL 34, LAUSANNE, Frontiers Media S.A, 2021, 2296-8016.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor 20501 Materials engineering
Stát vydavatele Švýcarsko
Utajení není předmětem státního či obchodního tajemství
WWW URL
Kód RIV RIV/75081431:_____/21:00002236
Organizační jednotka Vysoká škola technická a ekonomická v Českých Budějovicích
Klíčová slova anglicky multiferroic; bismuth ferrite; cycloidal spin arrangement; mechanochemistry; Mössbauer spectroscopy
Štítky KSTR5, RIV21, SCOPUS
Změnil Změnila: Mgr. Nikola Petříková, učo 28324. Změněno: 14. 1. 2022 09:20.
Anotace
Bismuth ferrite (BiFeO3) particles are prepared by a combined mechanochemical−thermal processing of a Bi2O3 + α-Fe2O3 mixture. Structural, magnetic, hyperfine, morphological and chemical properties of the as-prepared BiFeO3 are studied using X-ray diffraction (Rietveld refinement), 57Fe Mössbauer spectroscopy, SQUID magnetometry, electron microscopy and energy dispersive X-ray spectroscopy. It is revealed that the structure of the ferrite exhibits the long-range distortion (significantly tilted FeO6 octahedra) and the short-range disorder (deformed FeO6 octahedra). Consequently, these structural features result in the suppression of a space modulated cycloidal spin arrangement in the material. The latter manifests itself by the appearance of only single spectral component in the 57Fe Mössbauer spectrum of BiFeO3. The macroscopic magnetic behavior of the material is interpreted as a superposition of ferromagnetic and antiferromagnetic contributions with a large coercive field and remanent magnetization. Taking into account the average particle size of the as-prepared BiFeO3 particles (∼98 nm), exceeding the typical period length of cycloid (∼62 nm), both the suppression of the spiral spin structure in the material and its partly ferromagnetic behavior are attributed to the crystal lattice distortion caused by mechanical stress during the preparation procedure.
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