Neutron magnetic tomography of ferrofluids

V. T. Lebedev, G. Török, B. P. Toperverg

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Magnetic flux distribution in ferrofluids has been evaluated by a new method based on Larmor precession of neutron spin and Fourier analysis of precession phases over the neutron wavelength spectrum. Using this method for a thin layer of magnetic fluid in an in-plane magnetic field, we detected an inhomogeneous distribution of induction. It is stronger near the non-magnetic fluid-metal interface. The surface layer covering ∼60% of the volume at low field H1=10Oe is shrunken to ∼25% at a stronger field H 2=200Oe when the fluid is substantially magnetised. Microscopic mechanisms of surface-induced ordering are discussed.

Original languageEnglish
Pages (from-to)95-97
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume252
Issue number1-3 SPEC. ISS.
DOIs
Publication statusPublished - Nov 2002

Fingerprint

Magnetic fluids
ferrofluids
Tomography
Neutrons
tomography
neutrons
Fluids
Fourier analysis
fluids
Magnetic flux
Larmor precession
Metals
Magnetic fields
precession
Wavelength
magnetic flux
surface layers
induction
coverings
magnetic fields

Keywords

  • Polarised neutron ferrofluid

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Neutron magnetic tomography of ferrofluids. / Lebedev, V. T.; Török, G.; Toperverg, B. P.

In: Journal of Magnetism and Magnetic Materials, Vol. 252, No. 1-3 SPEC. ISS., 11.2002, p. 95-97.

Research output: Contribution to journalArticle

Lebedev, V. T. ; Török, G. ; Toperverg, B. P. / Neutron magnetic tomography of ferrofluids. In: Journal of Magnetism and Magnetic Materials. 2002 ; Vol. 252, No. 1-3 SPEC. ISS. pp. 95-97.
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