Non-collinear magnetic order in a Sc-substituted barium hexaferrite

Z. Somogyvári, E. Sváb, K. Krezhov, L. Kiss, D. Kaptás, I. Vincze, E. Beregi, F. Bourèe

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A combined magnetic, neutron diffraction and field-dependent 57Fe Mössbauer study of Sc-substituted Ba-hexaferrite in powder form is reported, and the findings are compared with the data for BaFe12O19. The five cation sublattice with collinear ferrimagnetic structure of uniaxial (Gorter) type for BaFe12O19, persists also for BaFe10.4Sc1.6O19 at room temperature and below down to 130-190 K, depending on the applied field. Below room temperature, BaFe10.4Sc1.6O19 undergoes a magnetic transition as indicated by the magnetization and Mössbauer spectroscopic measurements. The neutron diffraction results are compatible with a gradual transformation below 190 K into a complex canted structure with spins pointing out of the axial direction. The complex magnetic order at 10 K can be described in terms of an incommensurate complex block-type conical structure.

Original languageEnglish
JournalJournal of Magnetism and Magnetic Materials
Volume304
Issue number2
DOIs
Publication statusPublished - Sep 2006

Fingerprint

Neutron diffraction
Barium
barium
neutron diffraction
room temperature
Powders
sublattices
Cations
Magnetization
Positive ions
cations
Temperature
magnetization
barium hexaferrite
Direction compound

Keywords

  • Cation distribution
  • Hexaferrites
  • Magnetic structure
  • Non-collinear

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Non-collinear magnetic order in a Sc-substituted barium hexaferrite. / Somogyvári, Z.; Sváb, E.; Krezhov, K.; Kiss, L.; Kaptás, D.; Vincze, I.; Beregi, E.; Bourèe, F.

In: Journal of Magnetism and Magnetic Materials, Vol. 304, No. 2, 09.2006.

Research output: Contribution to journalArticle

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AU - Somogyvári, Z.

AU - Sváb, E.

AU - Krezhov, K.

AU - Kiss, L.

AU - Kaptás, D.

AU - Vincze, I.

AU - Beregi, E.

AU - Bourèe, F.

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AB - A combined magnetic, neutron diffraction and field-dependent 57Fe Mössbauer study of Sc-substituted Ba-hexaferrite in powder form is reported, and the findings are compared with the data for BaFe12O19. The five cation sublattice with collinear ferrimagnetic structure of uniaxial (Gorter) type for BaFe12O19, persists also for BaFe10.4Sc1.6O19 at room temperature and below down to 130-190 K, depending on the applied field. Below room temperature, BaFe10.4Sc1.6O19 undergoes a magnetic transition as indicated by the magnetization and Mössbauer spectroscopic measurements. The neutron diffraction results are compatible with a gradual transformation below 190 K into a complex canted structure with spins pointing out of the axial direction. The complex magnetic order at 10 K can be described in terms of an incommensurate complex block-type conical structure.

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KW - Non-collinear

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