skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Magnetic properties of Ba-ferrite powders prepared by surfactant assisted ball milling

Abstract

Magnetic properties of Ba-ferrite processed by a novel method: surfactant assisted low energy ball milling, are discussed. By using cationic and anionic surfactants at pH values above and below the point of zero charge of the oxide surface, some remarkable changes in magnetic properties of the milled material are produced. Vibrating sample magnetometry (VSM) and ferromagnetic resonance are applied for sample evaluation. Directly after milling the particles are in the submicron range with a narrow size distribution. By application of an annealing procedure in air or vacuum to prepared powders changes were observed. Final annealing in air of the samples annealed first in vacuum produces Ba-ferrite powder with m{sub o}M{sub s} and H{sub c} values in a remarkably broad range 0.457--0.564 T, and 136--195 kA/m respectively.

Authors:
;  [1]
  1. Australian National Univ., Canberra (Australia). Research School of Physical Sciences and Engineering
Publication Date:
OSTI Identifier:
40195
Report Number(s):
CONF-930860-
Journal ID: IEMGAQ; ISSN 0018-9464; TRN: IM9520%%390
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics
Additional Journal Information:
Journal Volume: 30; Journal Issue: 2Pt2; Conference: EMMA `93: 5th European magnetic materials and applications conference, Kosice (Slovakia), 24-27 Aug 1993; Other Information: PBD: Mar 1994
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BARIUM COMPOUNDS; MAGNETIC PROPERTIES; FERRITES; EXPERIMENTAL DATA; FABRICATION; GRAIN SIZE; HYSTERESIS

Citation Formats

Kaczmarek, W.A., and Ninham, B.W. Magnetic properties of Ba-ferrite powders prepared by surfactant assisted ball milling. United States: N. p., 1994. Web. doi:10.1109/20.312386.
Kaczmarek, W.A., & Ninham, B.W. Magnetic properties of Ba-ferrite powders prepared by surfactant assisted ball milling. United States. doi:10.1109/20.312386.
Kaczmarek, W.A., and Ninham, B.W. Tue . "Magnetic properties of Ba-ferrite powders prepared by surfactant assisted ball milling". United States. doi:10.1109/20.312386.
@article{osti_40195,
title = {Magnetic properties of Ba-ferrite powders prepared by surfactant assisted ball milling},
author = {Kaczmarek, W.A. and Ninham, B.W.},
abstractNote = {Magnetic properties of Ba-ferrite processed by a novel method: surfactant assisted low energy ball milling, are discussed. By using cationic and anionic surfactants at pH values above and below the point of zero charge of the oxide surface, some remarkable changes in magnetic properties of the milled material are produced. Vibrating sample magnetometry (VSM) and ferromagnetic resonance are applied for sample evaluation. Directly after milling the particles are in the submicron range with a narrow size distribution. By application of an annealing procedure in air or vacuum to prepared powders changes were observed. Final annealing in air of the samples annealed first in vacuum produces Ba-ferrite powder with m{sub o}M{sub s} and H{sub c} values in a remarkably broad range 0.457--0.564 T, and 136--195 kA/m respectively.},
doi = {10.1109/20.312386},
journal = {IEEE Transactions on Magnetics},
number = 2Pt2,
volume = 30,
place = {United States},
year = {1994},
month = {3}
}