ELECTROKINETIC AND MAGNETIC-PROPERTIES OF SUBMICRON BAFE12O19 FERRITEPOWDER DISPERSIONS

Authors
KACZMAREK WA RADLINSKA EZ NINHAM BW
Citation
Wa. Kaczmarek et al., ELECTROKINETIC AND MAGNETIC-PROPERTIES OF SUBMICRON BAFE12O19 FERRITEPOWDER DISPERSIONS, Materials chemistry and physics, 35(1), 1993, pp. 31-35
Citations number
13
Categorie Soggetti
Material Science
Journal title
Materials chemistry and physics → ACNP
ISSN journal
02540584
Volume
35
Issue
1
Year of publication
1993
Pages
31 - 35
Database
ISI
SICI code
0254-0584(1993)35:1<31:EAMOSB>2.0.ZU;2-V
Abstract
The morphology, electrokinetic and magnetic properties of submicron Ba -ferrite powder, suspended freely in water solutions of simple sodium salts, are studied. Ferrite particles in water solutions behave as col loidal particles, with the surface potential proportional to pH, a poi nt of zero charge being at pH 5. A method for determining the magnetic switching field H(s) of powder assemblies is described. H(s) is found to depend on pH when the particles are immersed in 0.5 M Na salt solu tions, with the maximum observed value for NaNO3 at pH 7.8.