Morphology Control of FeCo Alloy Particles Synthesized by Polyol Process

Journal Article · Tue Mar 20 04:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2721262· OSTI ID:21055009

Kodama, D; Sato, Y; Tohji, K; Jeyadevan, B ^[1]; Shinoda, K ^[2]; Sato, K ^[3]

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1. Graduate school of Environmental Studies, Tohoku Univ., Sendai, Miyagi 980-8579 (Japan)
2. Institute of Multidisciplinary Research for Advanced Materials, Tohoku Univ., Sendai, Miyagi, 980-8577 (Japan)
3. Dowa Mining Company, Chiyoda, Tokyo 110-8282 (Japan)

FeCo alloy is a soft magnetic material that possesses the highest saturation magnetization of 2.4 T and crystallizes in bcc structure as in the case of {alpha}-Fe. However, the particles synthesized were highly agglomerated. Thus, in this paper, an attempt was made to control the morphology of the particles using different types and concentrations of surfactants such as oleic acid, oleyl amine, polyvinylpyrrolidone (PVP), etc., during the synthesis of the particles. Though all the surfactant experimented partially prevented the agglomeration, products had larger size distribution except for PVP, which provided nearly monodispersed particles. Furthermore, the FeCo particles synthesized in the presence of PVP were either cubic or nearly spherical depending on the concentration of Fe.

• OSTI ID: 21055009
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 898; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGGLOMERATION
AMINES
BCC LATTICES
COBALT ALLOYS
CONTROL
IRON ALLOYS
IRON-ALPHA
MAGNETIC MATERIALS
MAGNETIZATION
MANUFACTURING
MORPHOLOGY
OLEIC ACID
PARTICLE SIZE
PARTICLES
PVP
SATURATION
SURFACTANTS
SYNTHESIS